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진행성 위암으로 진단된 위의 충돌종양(선암과 신경내분비암)
박병수(Byung Soo Park),조태용(Tae Yong Jo),서형일(Hyung Il Seo),김현성(Hyun Sung Kim),김대환(Dae Hwan Kim),전태용(Tae Yong Jeon),김동헌(Dong Heon Kim),심문섭(Moon Sup Sim),김지연(Jee Yeon Kim) 대한외과학회 2007 Annals of Surgical Treatment and Research(ASRT) Vol.73 No.2
The collision tumors have been reported in various organs and represent the coexistence of two adjacent but histologically distinct tumors in an organ without any histological admixture. A gastric collision tumor is rare and most gastric collision tumors involve an adenocarcinoma colliding with a lymphoma. A 48-year-old man was referred to our hospital for an evaluation of dyspepsia and upper abdominal discomfort. Endoscopy demonstrated the presence of an ulcerative lesion in the gastric antrum. The biopsy specimens confirmed a pathological diagnosis of an adenocarcinoma. After a radical subtotal gastrectomy, a thorough Histopathological examination revealed a collision tumor: a well-differentiated adenocarcinoma in the superficial layer (mucosa, submucosa) and a poorly differentiated neuroendocrine carcinoma in the deeper layer (muscularis propria, serosa). The patient received combination chemotherapy with cisplatin and etoposide. Para-aortic lymph node enlargement was observed on the abdominal computed tomography scanning, 3 years after surgery. The patient underwent chemotherapy with TS-1, and the size of lymph nodes was reduced. The patient continues to do well after a follow up period of 5 years 3 months. We report this case of gastric collision tumor (adenocarcinoma and neuroendocrine carcinoma) with a brief review of the relevant literature.