title: Cystic colon duplication causing intussusception in a 25-year-old man: report of a case and review of the literature.
abstract: BACKGROUND
  Colonic intussusception is a rare congenital abnormality, mostly manifesting before the age of two with abdominal pain and acute intestinal obstruction with or without bleeding. In adults it may occur idiopathically or due to an intraluminal tumor mass.
  
  
  METHODS
  A 25-year-old man presented with an acute abdomen and severe crampy abdominal pain. The clinical picture mimicked acute appendicitis. Transabdominal ultrasound examination revealed a 5 cm circular mass in the right upper abdomen. The ensuing computed tomography suggested an intussusception in the ascending colon. Intraoperatively, no full thickness invagination was detected. Due to a hard, intraluminal tumor a standard right hemicolectomy with ileotransversostomy was performed. The histopathological analysis revealed a cystic colon duplication leading to mucosal invagination and obstruction.
  
  
  CONCLUSIONS
  In adults, colon intussusception is a rare event causing approximately 1% of all acute intestinal obstructions. Unlike its preferentially nonsurgical management in children, a bowel intussusception in adults should be operated because an organic, often malignant lesion is present in most cases.
authors.affiliation: Department of General Surgery, Klinikum rechts der Isar, Technische Universität München, Munich, Germany.
authors.forename: Carolin
authors.initials: C
authors.lastname: Reiser-Erkan
authors.forename: Mert
authors.initials: M
authors.lastname: Erkan
authors.forename: Erika
authors.initials: E
authors.lastname: Ulbrich
authors.forename: Jörg
authors.initials: J
authors.lastname: Nährig
authors.forename: Jörg
authors.initials: J
authors.lastname: Kleeff
mesh_terms: D000006:Abdomen, Acute / Q000209:etiology; D000328:Adult; D003106:Colon / Q000002:abnormalities*; D003108:Colonic Diseases / Q000175:diagnosis / Q000209:etiology* / Q000601:surgery; D003560:Cysts / Q000175:diagnosis*; D003937:Diagnosis, Differential; D006801:Humans; D007415:Intestinal Obstruction / Q000209:etiology / Q000601:surgery; D007443:Intussusception / Q000175:diagnosis / Q000209:etiology* / Q000601:surgery; D008297:Male