rectal duplication https://www.malacards.org/card/rectal_duplication GARD:0020122 Orphanet:171220 MONDO:0015734 UMLS:C4511483 Rectal duplication is a rare congenital anorectal malformation characterized by an egg-like, cystic, mucus-filled mass, composed of intestinal mucosal lining and smooth muscle tissue. Commonly they present in childhood with symptoms of recurrent urinary tract infections, gastroenteritis, obstruction, perianal sepsis and rectal bleeding. Drainage of mucus or pus from the anus is also a typical presenting sign. The majority are found in the retro-rectal space where they communicate with, or are contiguous to, the rectum. icd11.foundation:1354283575 SCTID:725910009 MEDGEN:1393874 anorectal malformation