title: Multifocal adenocarcinoma in situ with underlying carcinoid tumor of the gallbladder.
abstract: We describe a case of combined multifocal carcinoma in situ and carcinoid tumor of the gallbladder. Morphologic and immunohistochemical studies revealed two distinct neoplastic patterns without clear evidence of transition between the two processes.
authors.affiliation: Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, Mass. 02215.
authors.forename: M B
authors.initials: MB
authors.lastname: Resnick
authors.forename: D O
authors.initials: DO
authors.lastname: Jacobs
authors.forename: G L
authors.initials: GL
authors.lastname: Brodsky
mesh_terms: D000230:Adenocarcinoma / Q000737:chemistry / Q000473:pathology*; D002276:Carcinoid Tumor / Q000737:chemistry / Q000473:pathology*; D002278:Carcinoma in Situ / Q000737:chemistry / Q000473:pathology*; D005260:Female; D005706:Gallbladder Neoplasms / Q000737:chemistry / Q000473:pathology*; D006801:Humans; D008875:Middle Aged; D009378:Neoplasms, Multiple Primary / Q000737:chemistry / Q000473:pathology*