Unusual features of gall bladder duplication cyst with review of the literature.

A 1-month-old female infant presented with a lump in the right hypochondrium extending into the right iliac fossa. Ultrasonography and computed tomography suggested an intestinal duplication cyst or a gall bladder cyst. Exploratory laparotomy revealed it to be a congenital gall bladder duplication cyst without associated complications. It was removed after confirming the presence of a normal gall bladder. The infant's postoperative course was uneventful. This unusual presentation of congenital gall bladder duplication cyst prompted us to report this case.