title: Intramucosal adenocarcinoma of the appendix: how to find and how to treat.
abstract: A colonoscopic examination of a 58-year-old man revealed a small elevated lesion inside the orifice of the appendix. Using a polypectomy snare, a nodular polypoid lesion with a diameter of ca. 20 mm was removed from the lumen of the appendix. Histopathology showed that it was a well-differentiated adenocarcinoma. This is the first report of an intramucosal adenocarcinoma of the appendix diagnosed preoperatively; laparoscopy-assisted colectomy with a D2 lymph-node dissection was carried out. Endoscopists should consider an appendiceal tumor when an erosion, elevation, or deformity is seen in the head of the cecum.
authors.affiliation: Division of Gastroenterology and Hepatology, Dept. of Internal Medicine, Tokai University School of Medicine, 143 Shimokasuya, Isehara, Kanagawa 259-1193, Japan. ichikos@aol.com
authors.forename: I
authors.initials: I
authors.lastname: Sakamoto
authors.forename: S
authors.initials: S
authors.lastname: Watanabe
authors.forename: T
authors.initials: T
authors.lastname: Sakuma
authors.forename: M
authors.initials: M
authors.lastname: Igarashi
authors.forename: J
authors.initials: J
authors.lastname: Koike
authors.forename: T
authors.initials: T
authors.lastname: Shirai
authors.forename: S
authors.initials: S
authors.lastname: Sadahiro
authors.forename: M
authors.initials: M
authors.lastname: Nakamura
authors.forename: T
authors.initials: T
authors.lastname: Mine
mesh_terms: D000230:Adenocarcinoma / Q000473:pathology*; D001063:Appendiceal Neoplasms / Q000473:pathology*; D003082:Colectomy / Q000379:methods; D003113:Colonoscopy / Q000379:methods*; D006801:Humans; D007413:Intestinal Mucosa / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D016896:Treatment Outcome