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Small-bowel adenocarcinoma: case report and review of literature on diagnosis of small-bowel tumors.

Although the small bowel makes up nearly 75% of the total length of the gastrointestinal (GI) tract and encompasses 90% of its mucosal surface, small-bowel tumors are uncommon and thought to account for only 1.1-2.4% of GI tumors.1–2 However, with the advent of capsule endoscopy (CE) screening, the diagnosis of small-bowel tumors has increased and now comprises about 9% of all small-bowel lesions.3 We report a case of proximal primary jejunal adenocarcinoma as a cause of obscure GI bleeding and discuss the various modalities used to diagnose small-bowel tumors.