Abstract
Duplications of the alimentary tract are rare congenital anomalies that could present a diagnostic as well as therapeutic challenge. Twenty-seven patients with duplications of the alimentary tract were treated at Childrens Hospital Los Angeles between 1961 and 1992. Ages ranged from a few days to 5 years (67% younger than 1 year). The most common symptoms were nausea and vomiting, and the most common sign was a palpable abdominal mass. Three patients presented with gastric duplication, which was excised. The majority of the duplications were in the jejunum and ileum. All patients except one had primary resection of the duplication. One patient with a 45-cm tubular jejunal duplication was treated with mucosal stripping of the duplication. Five patients had cecal duplication, three patients presented with melena because of ectopic gastric tissue in the duplication, and two presented with intestinal obstruction. One of the latter patients presented with intussusception with cecal duplication as the leading point. Three patients with colonic duplication presented with abdominal pain and vomiting leading to excision of the duplication. Of the five patients with rectal duplication, three presented with chronic constipation. The other two patients presented elsewhere with perianal swelling, which eventually was drained because of a mistaken diagnosis of perianal abscess. Subsequently, these two patients came to us with persistent perineal fistula. In all our patients, rectal duplications were removed through a sacroperineal incision. The only patient in this series who died was a 6-week-old boy with gastric duplication; his death was attributed to an associated severe cardiac lesion. In patients with gastrointestinal symptoms, duplications should be considered in the differential diagnosis. If the intestinal duplication is short, the lesion can be removed with the adjacent normal bowel. For long duplications, mucosal stripping of the duplication is performed to preserve the adjacent bowel. The common blood supply shared by the duplication and the bowel must be carefully protected to avoid sacrifice of the bowel. The presence of heterotopic gastric mucosa in the duplication negates internal drainage of the lesion into the adjacent bowel.
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