title: Duplication of the vermiform appendix in an adult patient.
abstract: Duplication of the appendix is extremely rare. A 69-year-old woman was admitted with a 2-day history of right lower quadrant abdominal pain. Physical examination was consistent with acute appendicitis. Ultrasonography and colonoscopy gave a clinical impression of an inflammatory appendiceal mucocoele. Operative findings were an enlarged and inflamed appendix with distal cystic changes. Laparoscopic wedge resection of the caecum was performed. A tubular structure with a true lumen was found in the appendix. Haematoxylin and eosin staining and trichrome staining showed both structures had a true mucosa and a muscular layer. The duplication in this case does not belong to any of the previously described types of duplication.
authors.affiliation: Kyungpook National University Hospital, Daegu, Korea.
authors.forename: K H
authors.initials: KH
authors.lastname: Lim
mesh_terms: D015746:Abdominal Pain / Q000209:etiology; D000208:Acute Disease; D000368:Aged; D001062:Appendectomy / Q000379:methods*; D001064:Appendicitis / Q000000981:diagnostic imaging / Q000601:surgery*; D001065:Appendix / Q000002:abnormalities*; D003113:Colonoscopy / Q000379:methods; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D011859:Radiography; D014463:Ultrasonography