Duplication of intestine presented with an intra-abdominal abscess—a case report—

Abstract

Duplication of intestine is an extremely rare anomaly of the gastrointestinal tract, and it occurs in various sites of the intestinal tract. So far cases of this anomaly accompanied with inflammation have rarely been reported, accounting for 8.6% of all cases reported. We present a case of duplication of intestine presented with an intraabdominal abscess.
A 69-year-old male was seen at our hospital because of intermittent lower abdominal pain. Abdominal ultrasonography and CT scan showed thickening and calcification of the small intestinal wall. He was admitted for close exploration. It seemed that there was a foreign body like a fish bone in his intestinal tract, because he miss-swallowed it two days before admission. Despite fasting and treatment with antibiotics, the inflammation became worse, and we performed surgery. There were a firm mass about 5 cm in length in the abdominal cavity and intestinal wall-like structure in the mesentery of the jejunum. We diagnosed the case as duplication of intestine and performed partial resection of the small intestine including the duplicated intestine. On the resected material, intestine like structure was present along the small intestine. The pathological diagnosis was tubular duplication of intestine.
This case is of duplication of intestine presented with inflammation and associated with ectopic gastric mucosa and ectopic pancreatic tissue, which is rare and the sixth report in Japan.