title: Fundic adenomyomatosis bulged with the subserosal excessive fat of the gallbladder mimicking polypoid carcinoma: a case report with unusual imaging and morphological features.
abstract: This report describes a 41-year-old female who presented with adenomyomatosis of the gallbladder mimicking polypoid carcinoma, on the diagnostic imaging findings and revealing unusual histologic features for such a localized adenomyomatosis. The mass was located on the gallbladder liver-side wall at the fundus and papillary hyperechoic growth showed no clear ultrasonographic features of adenomyomatosis. The patient underwent a laparoscopic cholecystectomy with a tentative diagnosis of superficial polypoid carcinoma. Histologically, the tumor bulged due to subserosal excessive fat tissue.
authors.affiliation: The First Department of Surgery, Faculty of Medicine, University of the Ryukyus, Okinawa 903-0215, Japan. hshimoji@med.u-rukyu.ac.jp
authors.forename: H
authors.initials: H
authors.lastname: Shimoji
authors.forename: A
authors.initials: A
authors.lastname: Nakachi
authors.forename: H
authors.initials: H
authors.lastname: Matsubara
authors.forename: H
authors.initials: H
authors.lastname: Miyazato
authors.forename: T
authors.initials: T
authors.lastname: Isa
authors.forename: S
authors.initials: S
authors.lastname: Hiroyasu
authors.forename: M
authors.initials: M
authors.lastname: Shiraishi
authors.forename: Y
authors.initials: Y
authors.lastname: Muto
mesh_terms: D018194:Adenomyoma / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D000273:Adipose Tissue / Q000473:pathology; D000328:Adult; D002277:Carcinoma / Q000175:diagnosis*; D017081:Cholecystectomy, Laparoscopic; D003937:Diagnosis, Differential; D005260:Female; D005706:Gallbladder Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D006801:Humans; D009765:Obesity / Q000150:complications