Multiple primary cancer means that more than 2 cancers are independently developed in one individual. The incidence of multiple primary cancer is increasing gradually due to accurate cancer stastistics, earlier diagnosis and treatment, progressive increase in the number of individuals living in the "cancer age" group and aggressive therapy for primary cancers. Here, we report a case of synchronous primary triple cancers including thyroid, lung and stomach. The 60-year-old woman complained the three palpable masses on cervical area and we confirmed the papillary cancer of thyroid by fine needle aspiration biopsy. Whild we performed the further study for the possibilities of other lesion or metastasis, we found the adenocarcinoma of stomach and squamous cell carcinoma of lung. After the operation on stomach and thyroid cancer, radiotherapy and adjvunctive chemotherapy for lung had been done. Our case is a multiple primary cancer of different organs.
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