A case report of largest rectal prolapse in the literature successfully treated with Altemeier's procedure

•The rectal prolapse is defined as the concentric protrusion of full or partial thickness of the rectum or rectosigmoid via the anus.•Management of rectal prolapse has always been one of the challenges of colorectal surgery.•Giant rectal prolapse defined as segment of rectosigmoid larger than 10 cm in length.