title: A pseudoepidermoid cyst arising from exuberant squamous metaplasia of the gallbladder.
abstract: Squamous lesions of the gallbladder are uncommon. We report a case of a pseudoepidermoid cyst in a middle-aged woman arising on a background of chronic cholecystitis and cholelithiasis, which induced exuberant squamous metaplasia of the entire gallbladder mucosa, clinically mimicking a gallbladder tumor. To our knowledge, this is the first such reported case in the English literature.
authors.affiliation: Department of Pathology and Laboratory Medicine, Tan Tock Seng Hospital, Singapore, National University of Singapore. clarencethy@yahoo.com.sg
authors.forename: Clarence Hai Yi
authors.initials: CH
authors.lastname: Teo
authors.forename: Chon Kar
authors.initials: CK
authors.lastname: Leow
authors.forename: Satina A
authors.initials: SA
authors.lastname: Chang
mesh_terms: D000230:Adenocarcinoma / Q000175:diagnosis; D015415:Biomarkers / Q000378:metabolism; D002764:Cholecystitis / Q000150:complications / Q000473:pathology / Q000601:surgery; D042883:Choledocholithiasis / Q000150:complications / Q000473:pathology / Q000601:surgery; D002908:Chronic Disease; D003135:Common Bile Duct / Q000473:pathology / Q000601:surgery; D003937:Diagnosis, Differential; D004814:Epidermal Cyst / Q000378:metabolism / Q000473:pathology* / Q000601:surgery; D005260:Female; D005705:Gallbladder Diseases / Q000378:metabolism / Q000473:pathology* / Q000601:surgery; D005706:Gallbladder Neoplasms / Q000175:diagnosis; D006500:Hepatic Duct, Common / Q000473:pathology / Q000601:surgery; D006801:Humans; D007150:Immunohistochemistry; D007582:Jejunostomy; D008679:Metaplasia / Q000473:pathology; D008875:Middle Aged; D009092:Mucous Membrane / Q000473:pathology*; D016896:Treatment Outcome
chemical_list: D015415:Biomarkers