Abstract
A 67-year-old male was admitted to our institution for occult blood positivity and to test for anemia. Upper and lower gastroenteroscopy revealed no abnormal findings. A thickened intestinal wall was detected in the upper jejunum by contrast-enhanced abdominal computed tomography, and a small intestinal tumor was suspected. Capsule endoscopy revealed a lesion protruding two-thirds of its circumference into the upper jejunal wall, which showed a stricture. Single-balloon endoscopy confirmed a jejunal tumor. A specimen biopsied during single-balloon endoscopy revealed a well-differentiated tubular adenocarcinoma. Therefore, the patient was treated surgically. The intraoperative findings revealed a jejunal tumor approximately 5 cm distal from the Treiz ligament, and the jejunum, including the tumor with a 5 cm margin, was partially resected. The resected tumor was 60×40×30 mm in size. Pathological examination revealed a well-differentiated tubular adenocarcinoma with invasion of the serosa and no vessel or lymphatic invasion. With the advent of capsule endoscopy and balloon endoscopy, it has become possible to visualize small intestinal mucosa and detect disease in the small intestine. We present the case of a male patient with a jejunal carcinoma that was successfully detected by capsule endoscopy and balloon endoscopy.
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