Korean J Pathol.  2001 Feb;35(1):76-79.

Gastric Collision Tumor (Adenocarcinoma and Neuro-endocrine Carcinoma): A Report of Two Cases

Affiliations
  • 1Departments of Pathology, Chonbuk National University Medical School, Chonju 561-712, Korea. mjchung@moak.chonbuk.ac.kr

Abstract

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.

Keyword

Collision tumor; Neuroendocrine carcinoma; Adenocarcinoma
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