Cancer Research and Treatment

Original Articles

A Clinical Study of 500 Cases of Breast Cancer: In Sik Park, Ja Yun Koo, Hy De Lee, Woo Hee Jung; J Korean Cancer Assoc. 1997;29(6):1061-1068.

Abstract PDF: PURPOSE
We investigated the clinical characteristics of breast cancers and its significance. MATERIAL AND METHOD: We evaluated the clinical characteristics of 500 women with breast cancer who were diagnosed and treated by one surgeon between March 1991 and August 1996.
RESULTS
The median age was 46.7 years and the most common age group was 40's. The presenting symptoms for most patients were palpable mass (75.2%) followed by abnormal mammographic findings (8.4%), pain (6.3%) and nipple discharges (4.7%), and the duration of symptoms was less than 1 month in 41.4%. Fifty three percent of the 500 cases had T2 lesion (size; 2 to 5 cm). With the increase of tumor size, overall and disease free survival rates (OS, DFS) were decreased. Surgical treatment consisted of modified radical mastectomy (52.8%) and partial mastectomy (33.6%) The most common stage was II (42.3%) and the early breast cancer (stage 0, I, II) was 388cases (78.1%) and the stage were inversely correlated with DFS and OS. The positivity of axillary lymph node was 39.3% and the number of the metastatic lymph nodes was inversely correlated with DFS and OS. The pathologic types were infiltrating ductal carcinoma (83.0%), ductal carcinoma in situ (12.8%), infiltrating lobular carcinoma (1.2%), lobular carcinoma in situ (0.4%) and Paget's disease (2.0%). ER positivity was 48.9% and PR 46.9%. ER positive patients showed survival benefit compared to ER negative patients. The common sites of distant metastases were lung, bone and liver.
CONCLUSIONS
Our patients with breast cancer were younger than those of western and showed the impacts on survival according to the lymph node status,tumor size.

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The Prognostic Effects of Spleen Preservation in The Radical Total Gastrcomy: Hee Duck Kim, Chung Han Lee, Kyung Hyun Choi, Seung Do Lee, Jae Kwan Suh; J Korean Cancer Assoc. 1994;26(2):198-208.

Abstract PDF: In Gastric Cancer Surgery, an extended radical operation is common procedure, and in cases of total gastrectomy, there is a tendency to perform splenectomy at the same time. However, regarding to the prophylactic splenectamy for clearing of spleen hilar nodes the prognostic ef- fectivity is controversiaL We studied the value of spleen preservation in total gastrectomy for gastric cancer by survival rate, according to tumor stage and tumor location and by inflammatory complications. And another study was done on cellular immunity of total gastrectomy patients by T-cell subset(T3T4T5 & T4T8 Ratio) and Natural Killer cell activity changes(preoperative day and postoperative 2 months) with or without combined splenectomy. In five year survival rate of stage I and II groups, spleen preserving group(78.7%) has better prognosis than splenectomized group(70.4%) and in stage III and IV groups, 5 year survival rate of nonsplenectomized cases(30%) showed higher than that of splenectomized cases(17%). Five year survival rate of nonsplenectomized, proximal gastric cancer group(57.5%) showed significantly better than that of splenectomized group(30%). Postoperative T4/T8, ratio and NK cell activity were markedly decreased compared to preoperative ratio in the splenectomized group than the non-splenectomized and control groups. Consequently spleen preserving group group had better prognosis than splenectomized group in total gastrectomy, which may be attributable in part to reduction of cellular immunity caused by splenectomy. It seems to be desirable that accordingly prophylactic splenectomy in gastric cancer surgery should be reconsidered.

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