Perforated tubular duplication of the transverse colon: a rare cause of meconium peritonitis with prenatal diagnosis.

The transverse colon is an exceptional location of intestinal duplication. Perforated duplications are rarely described in neonates. Meconium peritonitis (MP) can originate from prenatal perforated intestinal duplication. The authors report a case of a baby girl with prenatal diagnosis of MP. Rapid worsening of clinical aspects at birth and the presence of a pneumoperitoneum on systematic abdominal plain radiographs led to urgent surgery on the 1st day of life. Laparotomy showed a perforated necrotizing tubular duplication of the transverse colon. Removal of the duplication followed by limited segmental colonic resection and double colostomy were carried out. Follow-up was uneventful.