- Gastric Collision Tumor (Adenocarcinoma and Neuro-endocrine Carcinoma): A Report of Two Cases.
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Ho Sung Park, Ja Myoung Chung, Woo Sung Moon, Myoung Jae Kang, Dong Geun Lee
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Korean J Pathol. 2001;35(1):76-79.
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 Abstract
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- Concurrence of adenocarcinoma and neuroendocrine carcinoma in the gastrointestinal tract has rarely been observed. We report two cases of gastric collision tumors (adenocarcinoma and neuroendocrine carcinoma) that developed in a 64-year-old man and a 71-year-old man. In both cases, there was a single ulcerative lesion in the stomach.
Histologically, the gastric lesions were composed of two discrete lesions: tubular adenocarcinoma at the edge of an ulcer and neuroendocrine carcinoma in the ulcer base. We will discuss collision and composite tumors.
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