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= Abstract =

Colonic Web Associatd with Imperforate Anus

SJN Choi, M.D., SY Chung, M.D., and SK Kim, M.D.

Division of Pediatric Surgery, Department of Surgery

Chonnam National University, Kwangju, Korea

Colonic atresia is the least common form of intestinal atresia. Colonic atresia, like jejunoileal atresia, mostly occurs as a result of an intrauterine vascular acci­dent. According to Sutton's classification, type 1 colonic atresia exibits external continuity with an intraluminal diaphragm(colonic web) which may be imperfor­ate or perforate. Authors experienced a case of colonic web associated with im­perforate anus. The patient was treated under the impression of the high type imperforate anus. Posterior sagittal anorectoplasty at the age of 9 months re­vealed normal anorectal canal. At the age of 12 months, colostomy was repaired. Thereafter abdominal distension was developed. Barium enema noted a membra­nous obstruction of the colon on the level of the rectosigmoid junction. After exicision of the colonic web, the patient was discharged with no problem.

Index Words: Imperforate anus, Colonic web

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Fig. 1. Invertogram, tanken 48 hours after birth, 'Was interpreted as a suggestive finding of high type imperforate anus.

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Fig. 2. Colon stl)dy before colostomy repair shows no passage disturbance. The site of the colonic web is masked by the overlapping shadows.

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Fig. 3. Colon study after colostomy repair demon­strates the membraneous obstruction of the colon.

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Fig. 4. Both laterally retracted membrane is colonic web and Foley catheter through excised colonic web is shown on the operation field.

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