title: Thymic papillo-tubular adenocarcinoma containing a cyst: report of a case.
abstract: We report a case of thymic papillo-tubular adenocarcinoma in a 55-year-old man, who had no symptoms. Sternotomy revealed a tumor in the anterior mediastinum, tightly adhered to the pericardium. It was resected completely. Interestingly, the tumor contained a unilocular cyst filled with mucinous fluid, suggesting that it originated from a pre-existing thymic cyst. Pathological examination of the tumor revealed a primary thymic papillo-tubular adenocarcinoma resembling a tumor of gut origin. Thymic adenocarcinomas, particularly of the tubular subtype, are extremely rare.
authors.affiliation: Department of Surgery, Shiga University of Medical Science, Seta-Tsukinowa, Otsu, Shiga 520-2192, Japan. teramoto@belle.shiga-med.ac.jp
authors.forename: Koji
authors.initials: K
authors.lastname: Teramoto
authors.forename: Yo
authors.initials: Y
authors.lastname: Kawaguchi
authors.forename: Tetsuo
authors.initials: T
authors.lastname: Hori
authors.forename: Mitsuaki
authors.initials: M
authors.lastname: Ishida
authors.forename: Masayuki
authors.initials: M
authors.lastname: Hashimoto
authors.forename: Shoji
authors.initials: S
authors.lastname: Kitamura
authors.forename: Makoto
authors.initials: M
authors.lastname: Motoishi
authors.forename: Jun
authors.initials: J
authors.lastname: Hanaoka
authors.forename: Noriaki
authors.initials: N
authors.lastname: Tezuka
authors.forename: Hidetoshi
authors.initials: H
authors.lastname: Okabe
mesh_terms: D000230:Adenocarcinoma / Q000150:complications / Q000175:diagnosis*; D006801:Humans; D008297:Male; D008476:Mediastinal Cyst / Q000150:complications / Q000175:diagnosis*; D008875:Middle Aged; D013953:Thymus Neoplasms / Q000150:complications / Q000175:diagnosis*