Abstract
Primary adenocarcinomas of the small bowel are rare. Because of their rarity, non-specific symptoms and diagnostic difficulty, small bowel tumors are often diagnosed and treated late in their course. The diagnostic difficulty is increased when these tumors arise in association with primary synchronous tumors of the colon. We present a case of a 17-year-old female who was evaluated for anemia and bleeding per rectum. Colonoscopy revealed multiple colonic polyps. Intraoperatively, she was surprisingly found to be having a synchronous jejunal growth apart from multiple colonic polyoid lesions. Total colectomy was performed along with resection of jejunal growth. Histopathology of colonic specimen revealed multiple polypoid projections with one polyp showing adenocarcinoma and rest severe dysplasia. Histopathology of jejunal growth revealed poorly-differentiated adenocarcinoma. Very rarely, cases have been reported in literature, where the primary adenocarcinoma of the jejunum developed synchronously with colonic adenocarcinoma, and both treated surgically on the same occasion.
Highlights
The incidence of synchronous adenocarcinomas of the large bowel ranges from 0.6% to 11% in the international literature
The liquid contents of the small bowel, low bacterial counts, short transit time, alkaline Ph and high concentration of immunoglobulin IgA are some of the factors which might account for the low incidence of small bowel tumors [2]
The distribution of primary adenocarcinomas within the small intestine varies in different studies
Summary
Small bowel represents 75% of the length of the intestinal tract, primary adenocarcinomas of the small intestine are rare and malignant tumors of the small bowel account for less than 1% of the intestinal malignancies [1] [2]. When these tumors arise in association with primary synchronous tumors of the colon, the diagnostic difficulty is often increased. The incidence of synchronous adenocarcinomas of the large bowel ranges from 0.6% to 11% in the international literature. (2014) Synchronous Adenocarcinomas of the Jejunum and Sigmoid Colon—A Rare Case.
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