Cancer Research and Treatment

Original Articles

Gastrointestinal cancer

Salvage Radiotherapy for Loco-regional Recurrence of Esophageal Cancer Following Surgery: Won Kyung Cho, Jae Myoung Noh, Dongryul Oh, Yong Chan Ahn, Jong-Mu Sun, Hong Kwan Kim, Young Mog Shim; Cancer Res Treat. 2025;57(1):165-173. Published online July 26, 2024; DOI: https://doi.org/10.4143/crt.2024.191

Abstract PDF Supplementary Material PubReader ePub

Purpose
There is few evidence regarding the optimal salvage treatment options for loco-reginal recurrence of esophageal cancer. This study aimed to evaluate the clinical outcomes of salvage radiotherapy (RT) in patients with loco-regional recurrence (LRR) after surgery for esophageal cancer.
Materials and Methods
We retrospectively reviewed 147 esophageal cancer patients who received salvage RT for loco-regional recurrence between 1996 and December 2019. A total dose of 60 Gy in 20 fractions was used for RT alone and 60-70 Gy in 30-35 fractions for concurrent chemoradiotherapy (CCRT).
Results
The patients’ median age was 65 years (range, 41 to 86 years). The median disease-free interval was 13.5 months (1.0 to 97.4 months). After a median 18.8 months follow-up, the 2-year overall survival (OS) and progression-free survival (PFS) rates were 38.1% and 25.9%, respectively. The median OS and PFS were 18.8 and 8.4 months, respectively. The CCRT could not improve OS compared to RT (p=0.336), but there was a trend of better PFS in the CCRT group. Regarding toxicities, the rate of grade 3 or higher toxicity was 10.9% occurring in 16 patients, and it was higher in patients who received CCRT than in the RT alone group (19.6% vs. 6.3%, p=0.023).
Conclusion
Salvage RT alone as well as CCRT could be effective in patients with locoregionally recurrent esophageal cancer.

Citations

Citations to this article as recorded by

Salvage Chemoradiotherapy for Loco-Regional Recurrence of Esophageal Squamous Cell Carcinoma After Esophagectomy
Atsuto Katano, Tomoki Kiritoshi, Subaru Sawayanagi, Hideomi Yamashita
Journal of Clinical Medicine.2025; 14(5): 1540. CrossRef

1,174 View
84 Download
1 Web of Science
1 Crossref

The Clinical Efficacy of Colorectal Cancer Patients with Pulmonary Oligometastases by Sterotactic Body Ablative Radiotherapy: A Meta-Analysis: Jae-Uk Jeong, Chai Hong Rim, Gyu Sang Yoo, Won Kyung Cho, Eui Kyu Chie, Yong Chan Ahn, Jong Hoon Lee, on behalf of Korean Oligometastasis Working Group, Korean Cancer Association; Cancer Res Treat. 2024;56(3):809-824. Published online December 14, 2023; DOI: https://doi.org/10.4143/crt.2023.920

Abstract PDF Supplementary Material PubReader ePub

Purpose
There is increasing interest in the efficacy of stereotactic ablative radiotherapy (SABR) for treating colorectal cancer (CRC) patients with oligometastases (OM), recently. The purpose of this meta-analysis was to evaluate local control (LC), progression-free survival (PFS), and overall survival (OS) of CRC patients with pulmonary OM treated with SABR and toxicities.
Materials and Methods
Studies that reported SABR for CRC patients with pulmonary OM were searched from MEDLINE and Embase. Treatment outcomes including LC, PFS, OS, and toxicities of grade 3 or higher were assessed.
Results
A total of 19 studies with 1,668 patients were chosen for this meta-analysis. Pooled 1-, 2-, and 3-year LC rates were 83.1%, 69.3%, and 63.9%, respectively. PFS rates were 44.8%, 26.5%, and 21.5% at 1, 2, and 3 years, respectively. OS rates at 1-, 2-, and 3-year were 87.5%, 69.9%, and 60.5%, respectively. The toxicity rate of grade 3 or higher was 3.6%. The effect of dose escalation was meta-analyzed using available studies.
Conclusion
Application of SABR to CRC patients with pulmonary OM achieved modest local control with acceptable toxicity according to the present meta-analysis. Further studies establishing the clinical efficacy of SABR are guaranteed.

Citations

Citations to this article as recorded by

Identifying Trends in Oncology Research through a Bibliographic Analysis of Cancer Research and Treatment
Choong-kun Lee, Jeong Min Choo, Yong Chan Ahn, Jin Kim, Sun Young Rha, Chai Hong Rim
Cancer Research and Treatment.2025; 57(1): 11. CrossRef

3,536 View
159 Download
1 Web of Science
1 Crossref

General

Radiation Oncologists’ Perspectives on Oligometastatic Disease: A Korean Survey Study: Chai Hong Rim, Won Kyung Cho, Jong Hoon Lee, Young Seok Kim, Yang-Gun Suh, Kyung Hwan Kim, Ah Ram Chang, Eui Kyu Chie, Yong Chan Ahn, on behalf of the Oligometastasis Working Group, Korean Cancer Association; Cancer Res Treat. 2024;56(2):414-421. Published online November 22, 2023; DOI: https://doi.org/10.4143/crt.2023.876

Abstract PDF Supplementary Material PubReader ePub

Purpose
Perspectives of radiation oncologists on oligometastatic disease was investigated using multi-layered survey.
Materials and Methods
Online survey on the oligometastatic disease was distributed to the board-certified regular members of the Korean Society for Radiation Oncology. The questionnaire consisted of four domains: five questions on demographics; five on the definition of oligometastatic disease; four on the role of local therapy; and three on the oligometastatic disease classification, respectively.
Results
A total of 135 radiation oncologists participated in the survey. The median length of practice after board certification was 22.5 years (range, 1 to 44 years), and the vast majority (94.1%) answered affirmatively to the clinical experience in oligometastatic disease management. Nearly two-thirds of the respondents considered the number of involved organs as an independent factor in defining oligometastasis. Most frequently perceived upper limit on the numerical definition of oligometastasis was 5 (64.2%), followed by 3 (26.0%), respectively. Peritoneal and brain metastasis were nominated as the sites to be excluded from oligometastastic disease by 56.3% and 12.6% of the participants, respectively. Vast majority (82.1%) agreed on the role of local treatment in the management of oligometastatic disease. Majority (72%) of the participants acknowledged the European Society for Radiotherapy and Oncology (ESTRO)–European Organisation for Research and Treatment of Cancer (EORTC) classification of oligometastatic disease, however, only 43.3% answered that they applied this classification in their clinical practice. Underlying reasons against the clinical use were ‘too complicated’ (66.0%), followed by ‘insufficient supporting evidence’ (30.0%), respectively.
Conclusion
While most radiation oncologists supported the role of local therapy in oligometastatic disease, there were several inconsistencies in defining and categorizing oligometastatic disease. Continued education and training on oligometastatic disease would be also required to build consensus among participating caregivers.

Citations

Citations to this article as recorded by

Efficacy Analysis of Hypofractionated Radiotherapy for Oligometastatic Tumors: A Retrospective Study
Qian Sun, Hanqing Zhao, Xianwen Zhang, Suli Zhang, Zelai He, Gengming Wang, Hao Jiang, Aili Xuan, Xianming Li
Technology in Cancer Research & Treatment.2025;[Epub] CrossRef
A new proposal of simplified classification of non-small cell lung cancer oligometastases for easy applicability through systematic literature analysis and meta-analysis validation
Hanseung Kang, Woohyeon Do, Yong Chan Ahn, Eui Kyu Chie, Chai Hong Rim
European Journal of Cancer.2024; 212: 115043. CrossRef

3,106 View
150 Download
2 Web of Science
2 Crossref

Breast cancer

Implication of Pre- and Post-radiotherapy ctDNA Dynamics in Patients with Residual Triple-Negative Breast Cancer at Surgery after Neoadjuvant Chemotherapy: Findings from a Prospective Observational Study: Tae Hoon Lee, Haeyoung Kim, Yeon Jeong Kim, Woong-Yang Park, Won Park, Won Kyung Cho, Nalee Kim; Cancer Res Treat. 2024;56(2):531-537. Published online November 10, 2023; DOI: https://doi.org/10.4143/crt.2023.996

Abstract PDF PubReader ePub

Purpose
This study aims to determine the association between pre- and postoperative radiotherapy (PORT) circulating tumor DNA (ctDNA) dynamics and oncological outcomes in patients with residual triple-negative breast cancer who underwent surgery after neoadjuvant chemotherapy (NAC).
Materials and Methods
Between March 2019 and July 2020, 11 nonmetastatic patients with residual disease who underwent surgery after NAC were prospectively enrolled. In each patient, tumor specimens obtained during surgery and blood samples collected at three time points during PORT (T0: pre-PORT, T1: 3 weeks after PORT, T2: 1 month after PORT) were sequenced, targeting 38 cancer-related genes. Disease-free survival (DFS) was evaluated and the association between DFS and ctDNA dynamics was analyzed.
Results
At T0, ctDNA was detected in three (27.2%) patients. The ctDNA dynamics were as follows: two showed a decreasing ctDNA variant allele frequency (VAF) and reached zero VAF at T2, while one patient exhibited an increasing VAF during PORT and maintained an elevated VAF at T2. After a median follow-up of 48 months, two patients experienced distant metastasis without any locoregional failures. All failures occurred in patients with ctDNA positivity at T0 and a decreased VAF after PORT. The 4-year DFS rates according to the T0 ctDNA status were 67% (positive ctDNA) and 100% (negative ctDNA) (p=0.032).
Conclusion
More than a quarter of the patients with residual disease after post-NAC surgery exhibited pre-PORT ctDNA positivity, and ctDNA positivity was associated with poor DFS. For patients with pre-PORT ctDNA positivity, the administration of a more effective systemic treatment should be considered.

Citations

Citations to this article as recorded by

Role of circulating tumor DNA in early-stage triple-negative breast cancer: a systematic review and meta-analysis
Diana Zhang, Shayesteh Jahanfar, Judy B. Rabinowitz, Joshua Dower, Fei Song, Cherng-Horng Wu, Xiao Hu, Phillip Tracy, Mark Basik, Arielle Medford, Po-Han Lin, Chiun-Sheng Huang, Francois-Clement Bidard, Shufang Renault, Lori Pai, Mary Buss, Heather A. Par
Breast Cancer Research.2025;[Epub] CrossRef
Multiple drugs

Reactions Weekly.2024; 2033(1): 183. CrossRef

4,021 View
163 Download
2 Web of Science
2 Crossref

Editorial

Barriers in Oligometastasis Care in Korea: Radiation Oncologists’ Perspectives: Eui Kyu Chie, Chai Hong Rim, Won Kyung Cho, Yong Chan Ahn; Cancer Res Treat. 2023;55(4):1063-1064. Published online June 27, 2023; DOI: https://doi.org/10.4143/crt.2023.780

PDF PubReader ePub

Citations

Citations to this article as recorded by

Oligometastasis: Expansion of Curative Treatments in the Field of Oncology
Ah Reum Lim, Chai Hong Rim
Medicina.2023; 59(11): 1934. CrossRef

2,719 View
203 Download
1 Web of Science
1 Crossref

Original Article

Gastrointestinal cancer

Differential Perspectives by Specialty on Oligometastatic Colorectal Cancer: A Korean Oligometastasis Working Group’s Comparative Survey Study: Won Kyung Cho, Gyu Sang Yoo, Chai Hong Rim, Jae-Uk Jeong, Eui Kyu Chie, Yong Chan Ahn, Hyeon-Min Cho, Jun Won Um, Yang-Gun Suh, Ah Ram Chang, Jong Hoon Lee, On behalf of the Oligometastasis Working Group, Korean Cancer Association; Cancer Res Treat. 2023;55(4):1281-1290. Published online June 7, 2023; DOI: https://doi.org/10.4143/crt.2023.479

Abstract PDF PubReader ePub

Purpose
Despite numerous studies on the optimal treatments for oligometastatic disease (OMD), there is no established interdisciplinary consensus on its diagnosis or classification. This survey-based study aimed to analyze the differential opinions of colorectal surgeons and radiation oncologists regarding the definition and treatment of OMD from the colorectal primary.
Materials and Methods
A total of 141 participants were included in this study, consisting of 63 radiation oncologists (44.7%) and 78 colorectal surgeons (55.3%). The survey consisted of 19 questions related to OMD, and the responses were analyzed using the chi-square test to determine statistical differences between the specialties.
Results
The radiation oncologists chose “bone” more frequently compared to the colorectal surgeons (19.2% vs. 36.5%, p=0.022), while colorectal surgeons favored “peritoneal seeding” (26.9% vs. 9.5%, p=0.009). Regarding the number of metastatic tumors, 48.3% of colorectal surgeons responded that “irrelevant, if all metastatic lesions are amendable to local therapy”, while only 21.8% of radiation oncologist chose same answer. When asked about molecular diagnosis, most surgeons (74.8%) said it was important, but only 35.8% of radiation oncologists agreed.
Conclusion
This study demonstrates that although radiation oncologists and colorectal surgeons agreed on a majority of aspects such as diagnostic imaging, biomarker, systemic therapy, and optimal timing of OMD, they also had quite different perspectives on several aspects of OMD. Understanding these differences is crucial to achieving multidisciplinary consensus on the definition and optimal management of OMD.

Citations

Citations to this article as recorded by

Barriers in Oligometastasis Care in Korea: Radiation Oncologists’ Perspectives
Eui Kyu Chie, Chai Hong Rim, Won Kyung Cho, Yong Chan Ahn
Cancer Research and Treatment.2023; 55(4): 1063. CrossRef

3,075 View
179 Download
2 Web of Science
1 Crossref

Review Article

Metastasis-Directed Local Therapy of Hepatic Oligometastasis from Colorectal Cancer and Future Perspective in Radiation Therapy: Gyu Sang Yoo, Chai Hong Rim, Won Kyung Cho, Jae-Uk Jeong, Eui Kyu Chie, Hyeon-Min Cho, Jun Won Um, Yong Chan Ahn, Jong Hoon Lee, on behalf of Korean Cancer Association Oligometastasis Working Group; Cancer Res Treat. 2023;55(3):707-719. Published online March 15, 2023; DOI: https://doi.org/10.4143/crt.2022.1599

Abstract PDF PubReader ePub

Introduction of the concept for oligometastasis led to wide application of metastasis-directed local ablative therapies for metastatic colorectal cancer (CRC). By application of the metastasis-directed local ablative therapies including surgical resection, radiofrequency ablation (RFA), and stereotactic ablative body radiotherapy (SABR), the survival outcomes of patients with metastatic CRC have improved. The liver is the most common distant metastatic site in CRC patients, and recently various metastasis-directed local therapies for hepatic oligometastasis from CRC (HOCRC) are widely used. Surgical resection is the first line of metastatic-directed local therapy for HOCRC, but its eligibility is very limited. Alternatively, RFA can be applied to patients who are ineligible for surgical resection of liver metastasis. However, there are some limitations such as inferior local control (LC) compared with surgical resection and technical feasibility based on location, size, and visibility on ultrasonography of the liver metastasis. Recent advances in radiation therapy technology have led to an increase in the use of SABR for liver tumors. SABR is considered complementary to RFA for patients with HOCRC who are ineligible for RFA. Furthermore, SABR can potentially result in better LC for liver metastases > 2-3 cm compared with RFA. In this article, the previous studies regarding curative metastasis-directed local therapies for HOCRC based on the radiation oncologist’s and surgeon’s perspective are reviewed and discussed. In addition, future perspectives regarding SABR in the treatment of HOCRC are suggested.

Citations

Citations to this article as recorded by

Identifying Trends in Oncology Research through a Bibliographic Analysis of Cancer Research and Treatment
Choong-kun Lee, Jeong Min Choo, Yong Chan Ahn, Jin Kim, Sun Young Rha, Chai Hong Rim
Cancer Research and Treatment.2025; 57(1): 11. CrossRef
Evidence-based clinical recommendations for hypofractionated radiotherapy: exploring efficacy and safety - Part 4: Liver and locally recurrent rectal cancer
Hwa Kyung Byun, Gyu Sang Yoo, Soo-Yoon Sung, Jin-Ho Song, Byoung Hyuck Kim, Yoo-Kang Kwak, Yeon Joo Kim, Yeon-Sil Kim, Kyung Su Kim
Radiation Oncology Journal.2024; 42(4): 247. CrossRef

5,433 View
293 Download
3 Web of Science
2 Crossref

Original Articles

General

Role of Local Treatment for Oligometastasis: A Comparability-Based Meta-Analysis: Chai Hong Rim, Won Kyung Cho, Jong Hoon Lee, Young Seok Kim, Yang-Gun Suh, Kyung Hwan Kim, Eui Kyu Chie, Yong Chan Ahn, The Oligometastasis Working Group, Korea Cancer Association; Cancer Res Treat. 2022;54(4):953-969. Published online August 16, 2022; DOI: https://doi.org/10.4143/crt.2022.329

Abstract PDF Supplementary Material PubReader ePub

Purpose
We intend to investigate the oncological efficacy and feasibility of local consolidative therapy (LCT) through a meta-analysis method.
Materials and Methods
Four databases including PubMed, MEDLINE, Embase, and Cochrane library were searched. Target studies are controlled trials comparing outcomes of LCT versus a control group. Primary endpoints are overall survival (OS) and progression-free survival (PFS).
Results
A total of 54 studies involving 7,242 patients were included. Pooled analyses showed that the LCT arm could achieve improved OS with pooled odds ratio of 2.896 (95% confidence interval [CI], 2.377 to 3.528; p < 0.001). Regarding PFS, pooled analyses showed pooled odds ratio of 3.045 (95% CI, 2.356 to 3.937; p < 0.001) in favor of the LCT arm. In the subgroup analyses including the studies with reliable comparability (e.g. randomized studies or intentionally matched studies without significant favorable prognosticator in LCT arms), pooled odds ratio was 2.548 (95% CI, 1.808 to 3.591; p < 0.001) favoring the LCT arm regarding OS. Regarding PFS, pooled OR was 2.656 (95% CI, 1.713 to 4.120; p < 0.001) which also favored the LCT arm. Subgroup analyses limited to the randomized controlled trials (RCT) were also performed and pooled odds ratios on OS and PFS were 1.535 (95% CI, 1.082 to 2.177; p=0.016) and 1.668 (95% CI, 1.187 to 2.344; p=0.003). The rates of grade ≥ 3 complications related to LCT was mostly low (< 10%) and not significantly higher compared to the control arm.
Conclusion
Pooled analyses results of all included studies, selected studies with reliable comparability, and RCT’s demonstrated the survival benefit of LCT. These consistent results suggest that LCT was beneficial to the patients with oligometastasis.

Citations

Citations to this article as recorded by

Identifying Trends in Oncology Research through a Bibliographic Analysis of Cancer Research and Treatment
Choong-kun Lee, Jeong Min Choo, Yong Chan Ahn, Jin Kim, Sun Young Rha, Chai Hong Rim
Cancer Research and Treatment.2025; 57(1): 11. CrossRef
The Society of Thoracic Surgeons (STS) Clinical Practice Guideline on Surgical Management of Oligometastatic Non-small Cell Lung Cancer
Mara B. Antonoff, Kyle G. Mitchell, Samuel S. Kim, Hai V. Salfity, Svetlana Kotova, Robert Taylor Ripley, Alfonso L. Neri, Pallavi Sood, Saumil G. Gandhi, Yasir Y. Elamin, Jessica S. Donington, David R. Jones, Elizabeth A. David, Stephen G. Swisher, Isabe
The Annals of Thoracic Surgery.2025; 119(3): 495. CrossRef
Maintaining First-Line Therapy Plus Radiation Therapy May Prolong Progression-Free Survival and Delay Second-Line Therapy for Oligoprogressive Hepatocellular Carcinoma
Boyu Leng, Haohua Wang, Yunfan Ge, Xiaoli Sun, Pingping Dong, Xinzhe Dong, Xuezhang Duan, Quan Wang, Yaoxiong Xia, Lijuan Ding, Honghai Dai, Tianxing Liu, Fang Shi, Xiang Zhang, Jinbo Yue
International Journal of Radiation Oncology*Biology*Physics.2025;[Epub] CrossRef
The patterns of systemic metastasis in major salivary gland cancer and therapeutic implications
Subi Oh, Younghac Kim, Hyojun Kim, Eunhye Kim, Sook-young Woo, Nayeon Choi, Junhun Cho, Dongryul Oh, Yong-Chan Ahn, Sehhoon Park, Myung-Ju Ahn, Han-Sin Jeong
Oral Oncology.2025; 164: 107258. CrossRef
Aggressive Local Ablative Radiotherapy Mitigates Progression Risk in Oligometastatic Lung Adenocarcinoma
Gowoon Yang, Kyung Hwan Kim, Chang Geol Lee, Min Hee Hong, Hye Ryun Kim, Yeona Cho, Hong In Yoon
Cancer Research and Treatment.2024; 56(1): 115. CrossRef
MR-guided stereotactic radiotherapy of infra-diaphragmatic oligometastases: Evaluation of toxicity and dosimetric parameters
Mette van Overeem Felter, Pia Krause Møller, Mirjana Josipovic, Susanne Nørring Bekke, Uffe Bernchou, Eva Serup-Hansen, Kasper Madsen, Parag J. Parikh, Joshua Kim, Poul Geertsen, Claus P. Behrens, Ivan R. Vogelius, Mette Pøhl, Tine Schytte, Gitte Fredberg
Radiotherapy and Oncology.2024; 192: 110090. CrossRef
Clinical implication of neck dissection for metastatic lymph nodes originating from non-head and neck regions
Min Ji Kim, So Hee Kang, MinSu Kwon, Young Ho Jung, Seung-Ho Choi, Soon Yuhl Nam, Yoon Se Lee
Acta Oto-Laryngologica.2024; 144(2): 153. CrossRef
Surgery for Oligometastatic Pancreatic Cancer: Defining Biologic Resectability
Shruti Koti, Lyudmyla Demyan, Gary Deutsch, Matthew Weiss
Annals of Surgical Oncology.2024; 31(6): 4031. CrossRef
Radiation Oncologists’ Perspectives on Oligometastatic Disease: A Korean Survey Study
Chai Hong Rim, Won Kyung Cho, Jong Hoon Lee, Young Seok Kim, Yang-Gun Suh, Kyung Hwan Kim, Ah Ram Chang, Eui Kyu Chie, Yong Chan Ahn
Cancer Research and Treatment.2024; 56(2): 414. CrossRef
Radiation Oncologists’ Perspectives on Oligometastatic Prostate Cancer: A Survey from Korean Oligometastasis Working Group
Gyu Sang Yoo, Sunmin Park, Chai Hong Rim, Won Kyung Cho, Ah Ram Chang, Young Seok Kim, Yong Chan Ahn, Eui Kyu Chie
Current Oncology.2024; 31(6): 3239. CrossRef
Local Ablative Therapy Combined With Pembrolizumab in Patients With Synchronous Oligometastatic Non-Small Cell Lung Cancer: A Recursive Partitioning Analysis
Hye In Lee, Eun Kyung Choi, Su Ssan Kim, Young Seob Shin, Junhee Park, Chang-Min Choi, Shinkyo Yoon, Hyeong Ryul Kim, Young Hyun Cho, Si Yeol Song
International Journal of Radiation Oncology*Biology*Physics.2024; 120(3): 698. CrossRef
Retrospective Analysis of Efficacy and Toxicity of Stereotactic Body Radiotherapy and Surgical Resection of Adrenal Metastases from Solid Tumors
Jamie Lütscher, Hans Gelpke, Adrian Zehnder, Laetitia Mauti, Christian Padevit, Hubert John, Nidar Batifi, Daniel Rudolf Zwahlen, Robert Förster, Christina Schröder
Cancers.2024; 16(15): 2655. CrossRef
A new proposal of simplified classification of non-small cell lung cancer oligometastases for easy applicability through systematic literature analysis and meta-analysis validation
Hanseung Kang, Woohyeon Do, Yong Chan Ahn, Eui Kyu Chie, Chai Hong Rim
European Journal of Cancer.2024; 212: 115043. CrossRef
Oligometastasis: More Lessons to Be Learned
Kyung Hwan Kim, Yong Chan Ahn
Cancer Research and Treatment.2023; 55(1): 1. CrossRef
Top Ten Lessons Learned from Trials in Oligometastatic Cancers
Vivian S. Tan, David A. Palma
Cancer Research and Treatment.2023; 55(1): 5. CrossRef
Genomic Characteristics and the Potential Clinical Implications in Oligometastatic Non–Small Cell Lung Cancer
Rongxin Liao, Kehong Chen, Jinjin Li, Hengqiu He, Guangming Yi, Mingfeng Huang, Rongrong Chen, Lu Shen, Xiaoyue Zhang, Zaicheng Xu, Zhenzhou Yang, Yuan Peng
Cancer Research and Treatment.2023; 55(3): 814. CrossRef
Metastasis-Directed Local Therapy of Hepatic Oligometastasis from Colorectal Cancer and Future Perspective in Radiation Therapy
Gyu Sang Yoo, Chai Hong Rim, Won Kyung Cho, Jae-Uk Jeong, Eui Kyu Chie, Hyeon-Min Cho, Jun Won Um, Yong Chan Ahn, Jong Hoon Lee
Cancer Research and Treatment.2023; 55(3): 707. CrossRef
Barriers in Oligometastasis Care in Korea: Radiation Oncologists’ Perspectives
Eui Kyu Chie, Chai Hong Rim, Won Kyung Cho, Yong Chan Ahn
Cancer Research and Treatment.2023; 55(4): 1063. CrossRef
Impact of high dose radiotherapy for breast tumor in locoregionally uncontrolled stage IV breast cancer: a need for a risk-stratified approach
Nalee Kim, Haeyoung Kim, Won Park, Won Kyung Cho, Tae Gyu Kim, Young-Hyuck Im, Jin Seok Ahn, Yeon Hee Park, Ji-Yeon Kim
Radiation Oncology.2023;[Epub] CrossRef
Oligometastasis: Expansion of Curative Treatments in the Field of Oncology
Ah Reum Lim, Chai Hong Rim
Medicina.2023; 59(11): 1934. CrossRef
Treating Oligometastses, Prelude or Just Hassles of Systemic Treatment
Dae Ho Lee
Cancer Research and Treatment.2022; 54(4): 951. CrossRef

7,115 View
334 Download
20 Web of Science
21 Crossref

Gynecologic cancer

Effect of Waiting Time from Pathological Diagnosis to Definitive Concurrent Chemoradiation for Cervical Cancer on Overall Survival: Kyoung Won Noh, Bomi Kim, Chel Hun Choi, Tae-Joong Kim, Jeong-Won Lee, Byoung-Gie Kim, Duk-Soo Bae, Won Kyung Cho, Won Park, Yoo-Young Lee; Cancer Res Treat. 2022;54(1):245-252. Published online April 15, 2021; DOI: https://doi.org/10.4143/crt.2021.023

Abstract PDF Supplementary Material PubReader ePub

Purpose
This study aimed to evaluate the effect of waiting time, from diagnosis to initiation of definitive concurrent chemoradiation (CCRT), on overall survival in cervical cancer patients.
Materials and Methods
Patients with cervical cancer who were treated with definitive CCRT between 2000 and 2017 were retrospectively reviewed. Time from initial pathological diagnosis to definitive CCRT was analyzed both as a continuous variable (per day) and as a categorical variable in two groups (group 1 ≤ median, group 2 > median). Patients with a waiting time of more than 60 days were excluded.
Results
The median waiting time was 14 days (0-60). There were differences between group 1 and group 2 in age and chemotherapy regimens. However, no significant difference was found in the International Federation of Gynecology and Obstetrics stage, cell type, or the number of cycles of chemotherapy received during CCRT. A longer waiting time was associated with poorer overall survival on the Kaplan-Meier curve (group 1 vs. group 2, p=0.042). On multivariate analysis, intervals as either a continuous variable (hazard ratio [HR], 1.023; 95% confidence interval [CI], 1.006 to 1.040; p=0.007) or a categorical variable (HR, 1.513; 95% CI, 1.073 to 2.134; p=0.018), FIGO stage, cell type, and the number of cycles of chemotherapy received during CCRT were significant independent prognostic factors for overall survival.
Conclusion
A shorter waiting time from pathological diagnosis to definitive CCRT showed benefit on overall survival. Our findings suggest that an effort to minimize waiting times should be recommended in cervical cancer patients who are candidates for CCRT.

Citations

Citations to this article as recorded by

Effect of waiting time for radiotherapy after last induction chemotherapy on prognosis of locally advanced nasopharyngeal carcinoma
Kui‐Xuan Zhu, Ting Ding, Yi‐Min E, Hong‐Wei Yang, Rui‐Ping Wu, Run‐Jia Liu, Ling‐Li Zhou, Wen‐Jie Fu, Mei‐Ping Jiang, Xiao‐Li Wang
Head & Neck.2024; 46(5): 1189. CrossRef
An Innovative Thermal Imaging Prototype for Precise Breast Cancer Detection: Integrating Compression Techniques and Classification Methods
Khaled S. Ahmed, Fayroz F. Sherif, Mohamed S. Abdallah, Young-Im Cho, Shereen M. ElMetwally
Bioengineering.2024; 11(8): 764. CrossRef
Prognostic impact of waiting time between diagnosis and treatment in patients with cervical cancer: A nationwide population-based study
Amy P. Hack, Ronald P. Zweemer, Trudy N. Jonges, Femke van der Leij, Cornelis G. Gerestein, Max Peters, Ina M. Jürgenliemk-Schulz, Peter S.N. van Rossum
Gynecologic Oncology.2022; 165(2): 339. CrossRef
The Role of Conization before Radical Hysterectomy in Cervical Cancer including High Risk Factors of Recurrence: Propensity Score Matching
Chi-Son Chang, Ji Song Min, Ki Hyeon Song, Chel Hun Choi, Tae-Joong Kim, Jeong-Won Lee, Byoung-Gie Kim, Yoo-Young Lee
Cancers.2022; 14(16): 3863. CrossRef
Survival outcomes following treatment delays among patients with early-stage female cancers: a nationwide study
Yu Min, Zheran Liu, Rendong Huang, Ruidan Li, Jing Jin, Zhigong Wei, Ling He, Yiyan Pei, Ning Li, Yongllin Su, Xiaolin Hu, Xingchen Peng
Journal of Translational Medicine.2022;[Epub] CrossRef

7,038 View
195 Download
7 Web of Science
5 Crossref

Gynecologic Cancer

Early Metabolic Response Assessed Using ¹⁸F-FDG-PET/CT for Image-Guided Intracavitary Brachytherapy Can Better Predict Treatment Outcomes in Patients with Cervical Cancer: Nalee Kim, Won Park, Won Kyung Cho, Duk-Soo Bae, Byoung-Gie Kim, Jeong-Won Lee, Tae-Joong Kim, Chel Hun Choi, Yoo-Young Lee, Young Seok Cho; Cancer Res Treat. 2021;53(3):803-812. Published online December 9, 2020; DOI: https://doi.org/10.4143/crt.2020.1251

Abstract PDF Supplementary Material PubReader ePub

Purpose
This study aimed to identify the prognostic value of early metabolic response assessed using ¹⁸F-fluorodeoxyglucose positron emission tomography/computed tomography (FDG-PET/CT) during radiation therapy (RT) for cervical cancer.
Materials and Methods
We identified 116 patients treated with definitive RT, including FDG-PET/CT–guided intracavitary brachytherapy, between 2009 and 2018. We calculated parameters including maximum (SUV_max) and mean standardized uptake values (SUV_mean), metabolic tumor volume (MTV), and total lesion glycolysis (TLG) for baseline FDG-PET/CT (PET_base) and image-guided brachytherapy planning FDG-PET/CT (PET_IGBT). Multivariable analyses of disease-free survival (DFS) and overall survival (OS) were performed.
Results
We observed a time-dependent decrease in PET parameters between PET_base and PET_IGBT; ΔSUV_max, ΔSUV_mean, ΔMTV, and ΔTLG were 65%, 61%, 78%, and 93%, respectively. With a median follow-up of 59.5 months, the 5-year DFS and OS rates were 66% and 79%, respectively. Multivariable analysis demonstrated that ΔSUV_max ≥ 50% was associated with favorable DFS (hazard ratio [HR], 2.56; 95% confidence interval [CI], 1.14 to 5.77) and OS (HR, 5.14; 95% CI, 1.55 to 17.01). Patients with ΔSUV_max ≥ 50% (n=87) showed better DFS and OS than those with ΔSUV_max < 50% (n=29) (DFS, 76% vs. 35%, p < 0.001; OS, 90% vs. 41%, p < 0.001, respectively). Adenocarcinoma was frequently observed in ΔSUV_max < 50% compared to ΔSUV_max ≥ 50% (27.6% vs. 10.3%, p=0.003). In addition, models incorporating metabolic parameters showed improved accuracy for predicting DFS (p=0.012) and OS (p=0.004) than models with clinicopathologic factors.
Conclusion
Changes in metabolic parameters, especially those in SUV_max by > 50%, can help improve survival outcome predictions for patients with cervical cancer treated with definitive RT.

Citations

Citations to this article as recorded by

Personalized strategies for brachytherapy of cervix cancer
Guillaume Camprodon, Alexandra Gabro, Zineb El Ayachi, Supriya Chopra, Remi Nout, Philippe Maingon, Cyrus Chargari
Cancer/Radiothérapie.2024; 28(6-7): 610. CrossRef
Brachytherapy for cervical cancer: from intracavitary to interstitial technique
Xiaojing Yang, Hanru Ren, Zhen Li, Jie Fu
Frontiers in Oncology.2024;[Epub] CrossRef
Application of three-dimensional multi-imaging combination in brachytherapy of cervical cancer
Zhaoming Zhang, Ning Zhang, Guanghui Cheng
La radiologia medica.2023; 128(5): 588. CrossRef
MRI- and PET-Based Assessment of Radiological and Clinical Factors Associated With Cervical Cancer Response to External Beam Radiation Therapy
Arun G Paul, Steven Miller, Lance K Heilbrun, Daryn W Smith
Cureus.2022;[Epub] CrossRef

6,169 View
173 Download
5 Web of Science
4 Crossref

Carcinoembryonic Antigen Improves the Performance of Magnetic Resonance Imaging in the Prediction of Pathologic Response after Neoadjuvant Chemoradiation for Patients with Rectal Cancer: Gyu Sang Yoo, Hee Chul Park, Jeong Il Yu, Doo Ho Choi, Won Kyung Cho, Young Suk Park, Joon Oh Park, Ho Yeong Lim, Won Ki Kang, Woo Yong Lee, Hee Cheol Kim, Seong Hyeon Yun, Yong Beom Cho, Yoon Ah Park, Kyoung Doo Song, Seok-Hyung Kim, Sang Yun Ha; Cancer Res Treat. 2020;52(2):446-454. Published online September 25, 2019; DOI: https://doi.org/10.4143/crt.2019.261

Abstract PDF Supplementary Material PubReader ePub

Purpose
The purpose of this study was to investigate the role of carcinoembryonic antigen (CEA) levels in improving the performance of magnetic resonance imaging (MRI) for the prediction of pathologic response after the neoadjuvant chemoradiation (NCRT) for patients with rectal cancer.
Materials and Methods
We retrospectively reviewed the medical records of 524 rectal cancer patients who underwent NCRT and total mesorectal excision between January 2009 and December 2014. The performances of MRI with or without CEA parameters (initial CEA and CEA dynamics) for prediction of pathologic tumor response grade (pTRG) were compared by receiver-operating characteristic analysis with DeLong’s method. Cox regression was used to identify the independent factors associated to pTRG and disease-free survival (DFS) after NCRT.
Results
The median follow-up was 64.0 months (range, 3.0 to 113.0 months). On multivariate analysis, poor tumor regression grade on MRI (mrTRG; p < 0.001), initial CEA (p < 0.001) and the mesorectal fascia involvement on MRI before NCRT (mrMFI; p=0.054) showed association with poor pTRG. The mrTRG plus CEA parameters showed significantly improved performances in the prediction of pTRG than mrTRG alone. All of mrTRG, mrMFI, and initial CEA were also identified as independent factors associated with DFS. The initial CEA further discriminated DFS in the subgroups with good mrTRG or that without mrMFI.
Conclusion
The CEA parameters significantly improved the performance of MRI in the prediction of pTRG after NCRT for patients with rectal cancer. The DFS was further discriminated by initial CEA level in the groups with favorable MRI parameters.

Citations

Citations to this article as recorded by

Clinical outcomes of neoadjuvant chemoradiotherapy followed by total mesorectal excision in locally advanced rectal cancer with mesorectal fascia involvement
Jeong Ha Lee, Nalee Kim, Jeong Il Yu, Gyu Sang Yoo, Hee Chul Park, Woo-Yong Lee, Seong Hyeon Yun, Hee Cheol Kim, Yong Beom Cho, Jung Wook Huh, Yoon Ah Park, Jung Kyong Shin, Joon Oh Park, Seung Tae Kim, Young Suk Park, Jeeyun Lee, Won Ki Kang
Radiation Oncology Journal.2024; 42(2): 130. CrossRef
Predicting the response to neoadjuvant chemoradiation for rectal cancer using nomograms based on MRI tumour regression grade
S. Qin, Y. Chen, K. Liu, Y. Li, Y. Zhou, W. Zhao, P. Xin, Q. Wang, S. Lu, H. Wang, N. Lang
Cancer/Radiothérapie.2024; 28(4): 341. CrossRef
Body composition parameters combined with blood biomarkers and magnetic resonance imaging predict responses to neoadjuvant chemoradiotherapy in locally advanced rectal cancer
Jianguo Yang, Qican Deng, Zhenzhou Chen, Yajun Chen, Zhongxue Fu
Frontiers in Oncology.2023;[Epub] CrossRef
Pretreatment blood biomarkers combined with magnetic resonance imaging predict responses to neoadjuvant chemoradiotherapy in locally advanced rectal cancer
Xinyu Shi, Min Zhao, Bo Shi, Guoliang Chen, Huihui Yao, Junjie Chen, Daiwei Wan, Wen Gu, Songbing He
Frontiers in Oncology.2022;[Epub] CrossRef
Clinical implication and management of rectal cancer with clinically suspicious lateral pelvic lymph node metastasis: A radiation oncologist’s perspective
Gyu Sang Yoo, Hee Chul Park, Jeong Il Yu
Frontiers in Oncology.2022;[Epub] CrossRef
High-Resolution T2-Weighted MRI to Evaluate Rectal Cancer: Why Variations Matter
Kirsten L Gormly
Korean Journal of Radiology.2021; 22(9): 1475. CrossRef
MRI Assessment of Complete Response to Preoperative Chemoradiation Therapy for Rectal Cancer: 2020 Guide for Practice from the Korean Society of Abdominal Radiology
Seong Ho Park, Seung Hyun Cho, Sang Hyun Choi, Jong Keon Jang, Min Ju Kim, Seung Ho Kim, Joon Seok Lim, Sung Kyoung Moon, Ji Hoon Park, Nieun Seo
Korean Journal of Radiology.2020; 21(7): 812. CrossRef

7,248 View
183 Download
7 Web of Science
7 Crossref

Clinical Outcomes of Postoperative Radiotherapy Following Radical Prostatectomy in Patients with Localized Prostate Cancer: A Multicenter Retrospective Study (KROG 18-01) of a Korean Population: Sung Uk Lee, Kwan Ho Cho, Won Park, Won Kyung Cho, Jae-Sung Kim, Chan Woo Wee, Young Seok Kim, Jin Ho Kim, Taek-Keun Nam, Jaeho Cho, Song Mi Jeong, Youngkyong Kim, Su Jung Shim, Youngmin Choi, Jun-Sang Kim; Cancer Res Treat. 2020;52(1):167-180. Published online June 25, 2019; DOI: https://doi.org/10.4143/crt.2019.126

Abstract PDF Supplementary Material PubReader ePub

Purpose
The purpose of this study was to investigate the clinical outcomes of postoperative radiotherapy (PORT) patients who underwent radical prostatectomy for localized prostate cancer.
Materials and Methods
Localized prostate cancer patients who received PORT after radical prostatectomy between 2001 and 2012 were identified retrospectively in a multi-institutional database. In total, 1,117 patients in 19 institutions were included. Biochemical failure after PORT was defined as prostate-specific antigen (PSA) ≥ nadir+2 after PORT or initiation of androgen deprivation therapy (ADT) for increasing PSA regardless of its value.
Results
Ten-year biochemical failure-free survival, clinical failure-free survival, distant metastasisfree survival, overall survival (OS), and cause-specific survival were 60.5%, 76.2%, 84.4%, 91.1%, and 96.6%, respectively, at a median of 84 months after PORT. Pre-PORT PSA ≤ 0.5 ng/ml and Gleason’s score ≤ 7 predicted favorable clinical outcomes, with 10-year OS rates of 92.5% and 94.1%, respectively. The 10-year OS rate was 82.7% for patients with a PSA > 1.0 ng/mL and 86.0% for patients with a Gleason score of 8-10. The addition of longterm ADT (≥ 12 months) to PORT improved OS, particularly in those with a Gleason score of 8-10 or ≥ T3b.
Conclusion
Clinical outcomes of PORT in a Korean prostate cancer population were very similar to those in Western countries. Lower Gleason score and serum PSA level at the time of PORT were significantly associated with favorable outcomes. Addition of long-term ADT (≥ 12 months) to PORT should be considered, particularly in unfavorable risk patients with Gleason scores of 8-10 or ≥ T3b.

Citations

Citations to this article as recorded by

Optimal Definition of Biochemical Recurrence in Patients Who Receive Salvage Radiotherapy Following Radical Prostatectomy for Prostate Cancer
Sung Uk Lee, Jae-Sung Kim, Young Seok Kim, Jaeho Cho, Seo Hee Choi, Taek-Keun Nam, Song Mi Jeong, Youngkyong Kim, Youngmin Choi, Dong Eun Lee, Won Park, Kwan Ho Cho
Cancer Research and Treatment.2022; 54(4): 1191. CrossRef
A discussion on controversies and ethical dilemmas in prostate cancer screening
Satish Chandra Mishra
Journal of Medical Ethics.2021; 47(3): 152. CrossRef
Clinical Outcome of Salvage Radiotherapy for Locoregional Clinical Recurrence After Radical Prostatectomy
Sung Uk Lee, Kwan Ho Cho, Jin Ho Kim, Young Seok Kim, Taek-Keun Nam, Jae-Sung Kim, Jaeho Cho, Seo Hee Choi, Su Jung Shim, Jin Hee Kim, Ah Ram Chang
Technology in Cancer Research & Treatment.2021;[Epub] CrossRef

8,125 View
209 Download
3 Web of Science
3 Crossref

Feasibility of Selective Neck Irradiation with Lower Elective Radiation Dose in Treating Nasopharynx Cancer Patients: Won Kyung Cho, Dongryul Oh, Eonju Lee, Tae Gyu Kim, Hyebin Lee, Heerim Nam, Jae Myoung Noh, Yong Chan Ahn; Cancer Res Treat. 2019;51(2):603-610. Published online July 18, 2018; DOI: https://doi.org/10.4143/crt.2018.240

Abstract PDF PubReader ePub

Purpose
This study aimed to report the clinical outcomes following selective neck irradiation (SNI) with lower elective radiation therapy (RT) dose in treating nasopharyngeal cancer (NPC) patients.
Materials and Methods
A total of 347 NPC patients received definitive RT according to our SNI policy and were retrospectively analyzed. The clinical target volumes (CTVs) were subdivided into CTV at high risk (CTV-HR) and CTV at low risk (CTV-LR). The typical doses to gross tumor volume (GTV), CTV-HR, and CTV-LR were 68.4-70.0 Gy, 54.0-60.0 Gy, and 36.0 Gy.
Results
With the median follow-up of 68.1 months (range, 2.3 to 197.1 months), the 5-year rates of loco-regional control and progression-free survival in all the patients were 85.0% and 70.8%, respectively. Thirty patients developed regional failure and the regional control rates at 3 and 5 years were 92.6% and 91.4%, respectively. The sites of regional failure in relation to the target volume were exclusively inside GTV/CTV-HR in 20, inside and outside GTV/CTVHR in three, and exclusively outside GTV/CTV-HR in seven, which were 5.7%, 0.9%, and 2.0% of total patients, respectively.
Conclusion
The clinical outcomes by the current SNI policy were feasible and comparable to those following classic elective nodal irradiation policy.

Citations

Citations to this article as recorded by

Salivary Gland Volume Changes and Dry Mouth Symptom Following Definitive Radiation Therapy in Oropharyngeal Cancer Patients—A Comparison of Two Different Approaches: Intensity-Modulated Radiation Therapy Versus Intensity-Modulated Radiation Therapy/Intens
Seung Gyu Park, Yong Chan Ahn, Dongryul Oh, Kyungmi Yang, Sang Gyu Ju, Jin Man Kim, Dongyeol Kwon, Euncheol Choi, Han Gyul Yoon
Cancers.2025; 17(3): 554. CrossRef
In Reply to Liu and Luo
Kangpyo Kim, Yong Chan Ahn
International Journal of Radiation Oncology*Biology*Physics.2024; 118(1): 308. CrossRef
Optimizing Cervical Target Volume in Patients with Nasopharyngeal Cancer Based On Nodal Drainage Distance
Yang Liu, Wenbin Yan, Chaosu Hu, Xiaodong Huang, Kai Wang, Yuan Qu, Xuesong Chen, Runye Wu, Ye Zhang, Jianghu Zhang, Jingwei Luo, Yexiong Li, Jingbo Wang, Junlin Yi
Clinical Cancer Research.2024; 30(9): 1801. CrossRef
Dosimetric Comparison and Selection Criteria of Intensity-Modulated Proton Therapy and Intensity-Modulated Radiation Therapy for Adaptive Re-Plan in T3-4 Nasopharynx Cancer Patients
Mincheol Ko, Kyungmi Yang, Yong Chan Ahn, Sang Gyu Ju, Dongryul Oh, Yeong-bi Kim, Dong Yeol Kwon, Seyjoon Park, Kisung Lee
Cancers.2024; 16(19): 3402. CrossRef
Less is more: level IB-sparing radiation therapy in nasopharyngeal cancer
Dongryul Oh
Radiation Oncology Journal.2023; 41(1): 1. CrossRef
Dose and volume de-escalation of radiotherapy in head and neck cancer
MJ García-Anaya, S. Segado-Guillot, J. Cabrera-Rodríguez, MD Toledo-Serrano, JA Medina-Carmona, J. Gómez-Millán
Critical Reviews in Oncology/Hematology.2023; 186: 103994. CrossRef
Can Definitive Radiation Therapy Substitute Surgical Resection in Locally Advanced T3 or T4 Sinonasal Squamous Cell Carcinoma?
Kangpyo Kim, Yong Chan Ahn, Dongryul Oh, Jae Myoung Noh, Han-Sin Jeong, Man Ki Chung, Sang Duk Hong, Chung-Hwan Baek
International Journal of Radiation Oncology*Biology*Physics.2023; 117(4): 893. CrossRef
Progress in the comprehensive treatment of nasopharyngeal carcinoma: a review for risk-stratified management strategies
Yang Liu, Ziou Du, Shiyu Song, Junlin Yi
Holistic Integrative Oncology.2023;[Epub] CrossRef
Involved site radiation therapy in stage I-III nasopharyngeal carcinoma with limited lymph node burden (ISRT-NPC) or elective region irradiation: a study protocol for a multicenter non-inferiority randomized controlled phase III clinical trial
Yang Liu, Yaqian Han, Feng Liu, Desheng Hu, Zhijian Chen, Peiguo Wang, Jingao Li, Jiyong Qin, Feng Jin, Yexiong Li, Jingbo Wang, Junlin Yi
BMC Cancer.2023;[Epub] CrossRef
The Metabolic Footprint of Systemic Effects in the Blood Caused by Radiotherapy and Inflammatory Conditions: A Systematic Review
Karol Jelonek, Katarzyna Mrowiec, Dorota Gabryś, Piotr Widłak
Metabolites.2023; 13(9): 1000. CrossRef
Oncological and Functional Outcomes of Larynx-preserving Surgery for Hypopharyngeal Cancer: A Comparison with Definitive Radiation-based Treatment
Donghyeok Kim, Nalee Kim, Sungmin Koh, Man Ki Chung, Young-Ik Son, Dongryul Oh, Han-Sin Jeong, Yong Chan Ahn
Cancer Research and Treatment.2022; 54(1): 84. CrossRef
Re-irradiation with Moderate Hypo-fractionation Using Intensity Modulated Photon or Proton Radiation Therapy in Locally Recurrent Squamous Cell Carcinoma of Nasopharynx
Heerim Nam, Yong Chan Ahn, Kyungmi Yang, Dongryul Oh, Jae Myoung Noh
Cancer Research and Treatment.2022; 54(1): 96. CrossRef
Risk of Stroke in Nasopharyngeal Cancer Survivors
Teng Hwee Tan, Huili Zheng, Timothy Cheo, Jeremy Tey, Yu Yang Soon
Neurology.2022;[Epub] CrossRef
High Superior-Middle Pharyngeal Constrictor Muscle Mean Dose Correlates with Severe Late Lung Infection and Survival in Nasopharyngeal Cancer Patients
Wen-Shan Liu, Ju-Chun Chien, Yu-Hsien Huang, Po-Chun Chen, Wei-Lun Huang, Shao-Wei Chiang, Ching-Chih Lee, Bor-Hwang Kang, Yu-Chang Hu
Cancer Management and Research.2022; Volume 14: 1063. CrossRef
Application of Carotid Duplex Ultrasonography in the Surveillance of Carotid Artery Stenosis after Neck Irradiation
Deng-Yu Kuo, Yen-Wen Wu, Chen-Hsi Hsieh, Li-Jen Liao, Pei-Wei Shueng
Reviews in Cardiovascular Medicine.2022;[Epub] CrossRef
Simultaneous Reduction of Volume and Dose in Clinical Target Volume for Nasopharyngeal Cancer Patients
Wen-Shan Liu, Kuo-Wang Tsai, Bor-Hwang Kang, Ching-Chieh Yang, Wei-Lun Huang, Ching-Chih Lee, Yu-Chang Hu, Kuo-Ping Chang, Hsiu-Min Chen, Yaoh-Shiang Lin
International Journal of Radiation Oncology*Biology*Physics.2021; 109(2): 495. CrossRef
Clinical features of post-radiation nasopharyngeal necrosis and their outcomes following surgical intervention in nasopharyngeal cancer patients
Kyungmi Yang, Yong Chan Ahn, Heerim Nam, Sang Duk Hong, Dongryul Oh, Jae Myoung Noh
Oral Oncology.2021; 114: 105180. CrossRef
Early Clinical Outcomes of Intensity Modulated Radiation Therapy/Intensity Modulated Proton Therapy Combination in Comparison with Intensity Modulated Radiation Therapy Alone in Oropharynx Cancer Patients
Han Gyul Yoon, Yong Chan Ahn, Dongryul Oh, Jae Myoung Noh, Seung Gyu Park, Heerim Nam, Sang Gyu Ju, Dongyeol Kwon, Seyjoon Park
Cancers.2021; 13(7): 1549. CrossRef
Contemporary management of the neck in nasopharyngeal carcinoma
Wai Tong Ng, Raymond K. Y. Tsang, Jonathan J. Beitler, Remco de Bree, Andrés Coca‐Pelaz, Avraham Eisbruch, Orlando Guntinas‐Lichius, Anne W. M. Lee, Antti A. Mäkitie, William M. Mendenhall, Sandra Nuyts, Alessandra Rinaldo, K. Thomas Robbins, Juan P. Rodr
Head & Neck.2021; 43(6): 1949. CrossRef
Development and Validation of Web-Based Nomograms to Precisely Predict Survival Outcomes of Non-metastatic Nasopharyngeal Carcinoma in an Endemic Area
Ji-Jin Yao, Li Lin, Tian-Sheng Gao, Wang-Jian Zhang, Wayne R. Lawrence, Jun Ma, Ying Sun
Cancer Research and Treatment.2021; 53(3): 657. CrossRef
Advances in cancer imaging require renewed radiotherapy dose and target volume concepts
Johannes H.A.M. Kaanders, Sven van den Bosch, Tim Dijkema, Abrahim Al-Mamgani, Cornelis P.J. Raaijmakers, Wouter V. Vogel
Radiotherapy and Oncology.2020; 148: 140. CrossRef
Early clinical outcomes of helical tomotherapy/intensity‐modulated proton therapy combination in nasopharynx cancer
Seung Gyu Park, Yong Chan Ahn, Dongryul Oh, Jae Myoung Noh, Sang Gyu Ju, Dongyeol Kwon, Kwanghyun Jo, Kwangzoo Chung, Eunah Chung, Woojin Lee, Seyjoon Park
Cancer Science.2019; 110(9): 2867. CrossRef

7,883 View
217 Download
22 Web of Science
22 Crossref

Radiation Therapy Alone in cT1-3N0 Non-small Cell Lung Cancer Patients Who Are Unfit for Surgical Resection or Stereotactic Radiation Therapy: Comparison of Risk-Adaptive Dose Schedules: Won Kyung Cho, Jae Myoung Noh, Yong Chan Ahn, Dongryul Oh, Hongryull Pyo; Cancer Res Treat. 2016;48(4):1187-1195. Published online March 9, 2016; DOI: https://doi.org/10.4143/crt.2015.391

Abstract PDF PubReader ePub

Purpose
High dose definitive radiation therapy (RT) alone is recommended to patients with cT1-3N0 non-small cell lung cancer, who are unfit for surgery or stereotactic RT. This study was conducted to evaluate the clinical outcomes and cost-effectiveness following RT alone using two different modest hypofractionation dose schemes. Materials and Methods Between 2001 and 2014, 124 patients underwent RT alone. From 2001 till 2010, 60 Gy in 20 fractions was delivered to 79 patients (group 1). Since 2011, 60 Gy in 20 fractions (group 2, 20 patients), and 60 Gy in 15 fractions (group 3, 25 patients) were selectively chosen depending on estimated risk of esophagitis.
Results
At follow-up of 16.7 months, 2-year rates of local control, progression-free survival, and overall survival were 62.6%, 39.1%, and 59.1%, respectively. Overall survival was significantly better in group 3 (p=0.002). In multivariate analyses, cT3 was the most powerful adverse factor affecting clinical outcomes. Incidence and severity of radiation pneumonitis were not different among groups, while no patients developed grade 2 esophagitis in group 3 (p=0.003). Under current Korean Health Insurance Policy, RT cost per person was 22.5% less in group 3 compared with others. Conclusion The current study demonstrated that 60 Gy in 15 fractions instead of 60 Gy in 20 fractions resulted in comparable clinical outcomes with excellent safety, direct cost saving, and improved convenience to the patients with tumors located at ≥ 1.5 cm from the esophagus.

Citations

Citations to this article as recorded by

Radiotherapy in the management of lung oligometastases
V. Bourbonne, A. Lévy, J. Khalifa, D. Antoni, E. Blais, J. Darréon, C. Le Péchoux, D. Lerouge, P. Giraud, A. Marguerit, N. Pourel, F.-G. Riet, S. Thureau
Cancer/Radiothérapie.2024; 28(1): 36. CrossRef
Prospective study investigating hypofractionated proton beam therapy in patients with inoperable early stage non-small cell lung cancer
Kyungmi Yang, Jae Myoung Noh, Hye Yun Park, Hongseok Yoo, Sun Hye Shin, Hongryull Pyo
Frontiers in Oncology.2024;[Epub] CrossRef
Stereotactic Body Radiation Therapy (SBRT) for Non-Small Cell Lung Cancer (NSCLC) Therapy
Zixuan Lyu, Chiming Wei
Cancer Research Journal.2024; 12(2): 27. CrossRef
Accelerated Hypofractionated Radiotherapy for Centrally Located Lung Tumours Not Suitable for Stereotactic Body Radiotherapy or Chemoradiotherapy
K.L. Zeng, I. Poon, Y. Ung, M. Tsao, L. Zhang, A. Cumal, A.V. Louie, P. Cheung
Clinical Oncology.2023; 35(2): e173. CrossRef
An optimal dose‐fractionation for stereotactic body radiotherapy in peripherally, centrally and ultracentrally located early‐stage non‐small lung cancer
Izabela Zarębska, Maciej Harat
Thoracic Cancer.2023; 14(28): 2813. CrossRef
Toxicity of Proton Therapy versus Photon Therapy on Salvage Re-Irradiation for Non-Small Cell Lung Cancer
Kyungmi Yang, Yang-Gun Suh, Hyunju Shin, Hongryull Pyo, Sung Ho Moon, Yong Chan Ahn, Dongryul Oh, Eunah Chung, Kwanghyun Jo, Jae Myoung Noh
Life.2022; 12(2): 292. CrossRef
Prospective Study of Proton Therapy for Lung Cancer Patients with Poor Lung Function or Pulmonary Fibrosis
Jae Myoung Noh, Hongseok Yoo, Woojin Lee, Hye Yun Park, Sun Hye Shin, Hongryull Pyo
Cancers.2022; 14(6): 1445. CrossRef
Hypofractionated Postoperative Radiation Therapy for Breast Cancer – Do We Need More Evidence or Adapted Reimbursement Policies?
Monica-Emilia Chirilă, Ivica Ratosa, Gustavo Nader Marta, Philip Poortmans
Journal of Medical and Radiation Oncology.2021; 1(1): 83. CrossRef
Radiotherapy for Lung Cancer During the COVID Pandemic – A Narrative Review of Practical Recommendations
Prasenjit Chatterjee, Jibak Bhattacharya, Tanmay Ghosh, Biplap Sarkar, Monica-Emilia Chirilă, Sushmita Roy Chowdhury, Syamasis Bandyopadhyay, Jayaprakash Agarwal
Journal of Medical and Radiation Oncology.2021; 1(1): 99. CrossRef
Reduced Fractionation in Lung Cancer Patients Treated with Curative-intent Radiotherapy during the COVID-19 Pandemic
C. Faivre-Finn, J.D. Fenwick, K.N. Franks, S. Harrow, M.Q.F. Hatton, C. Hiley, J.J. McAleese, F. McDonald, J. O'Hare, C. Peedell, T. Pope, C. Powell, R. Rulach, E. Toy
Clinical Oncology.2020; 32(8): 481. CrossRef
Optimizing lung cancer radiation treatment worldwide in COVID-19 outbreak
Zhongxing Liao, Eleonor Rivin del Campo, Ahmed Salem, Qingsong Pang, Hui Liu, Jose Luis Lopez Guerra
Lung Cancer.2020; 146: 230. CrossRef
Radiation dose intensity and local tumour control of non-small cell lung cancer: A radiobiological modelling perspective
M Alaswad, C Kleefeld, M Foley
Journal of Physics: Conference Series.2019; 1248(1): 012071. CrossRef

11,329 View
237 Download
9 Web of Science
12 Crossref

First
Prev
Page of 1
Next
Last

Search