title: Perforated ileal duplication cyst with haemorrhagic pseudocyst formation.
abstract: Duplication cysts of the gastrointestinal tract are rare congenital abnormalities. Ectopic gastric mucosa, which can be found in duplications, may cause peptic ulceration, gastrointestinal bleeding or perforation. We report a 1-year-old boy with a perforated ileal duplication cyst with haemorrhagic pseudocyst formation caused by peptic ulceration of the duplication cyst. It presented a snowman-like appearance consisting of a small, thick-walled, true enteric cyst and a large, thin-walled haemorrhagic pseudocyst on US and CT. It is an unusual manifestation of a duplication cyst, which has not been reported in the English language literature.
authors.affiliation: Department of Radiology, College of Medicine, Hallym University, South Korea.
authors.forename: Im Kyung
authors.initials: IK
authors.lastname: Hwang
authors.forename: Sook
authors.initials: S
authors.lastname: Namkung
authors.forename: Bong Soo
authors.initials: BS
authors.lastname: Kim
authors.forename: Heung Chul
authors.initials: HC
authors.lastname: Kim
authors.forename: In Sun
authors.initials: IS
authors.lastname: Lee
authors.forename: Woo Chul
authors.initials: WC
authors.lastname: Hwang
mesh_terms: D003560:Cysts / Q000150:complications* / Q000000981:diagnostic imaging; D006471:Gastrointestinal Hemorrhage / Q000209:etiology*; D006801:Humans; D007082:Ileum / Q000002:abnormalities*; D007223:Infant; D007416:Intestinal Perforation / Q000150:complications*; D008297:Male; D010437:Peptic Ulcer / Q000150:complications; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography