Congenital pouch colon: Case report and literature review.

Background: congenital pouch colon (CPC) is an extremely rare Congenital gastrointestinal pathology, in which the normal colon is either partially or completely replaced by a pouch-like dilatation communicating with the urogenital tract through a fistula. That's divided into 2 types: Complete CPC and Incomplete CPC. Worldwide and middle east Arabian ethnicity except for Indians, show high scarcity regarding the incidence. Case presentation: A 1-day-old newborn boy with prenatal history of abdominal cyst in 2nd trimester US, presented hours after birth with abdominal distention (Fig- 1), in addition to the imperforate anus. The abdominal x-ray showed many dilated bowel loops and gasless soft tissue density with calcifications on the right side (Fig- 2). Exploratory laparotomy was done and showed a pouch-like colon that later on was treated via 2 stages of operation. Clinical discussion: early identification of CPC and differentiation from colon dilatation due to anorectal malformation is essential for the patient's welfare. CPC is more common in males, usually noticed in the neonatal period with abdominal distention, absence of anus, and intestinal obstruction. CPC is managed surgically depending on its type. Conclusion: congenital pouch colon is a rare but important differential diagnosis of abdominal distention, which should always be at the back of the surgeon's mind especially when anorectal malformation is present.