Hepatobiliary cystadenoma with mesenchymal stroma (HCMS) is a rare cystic tumor characterized by a layer of mucinous cuboidal to columnar epithelium situated on top of a basement membrane resting on an ovarian-like stroma. Cytologic features of this entity have not been extensively studied. We present a case of HCMS with emphasis on cytologic material obtained at the time of intraoperative consultation (IOC).
Department of Pathology, George Washington University Hospital, 2300 Eye Street NW, Room 502, Ross Hall, Washington, DC 20037, USA. lvoltaggio@mfa.gwu.edu
