Pneumocystis carinii infection presents as common bile duct mass biopsied by fine-needle aspiration.
This paper describes a case of Pneumocystis carinii (PC) presenting as a common bile duct intraluminal mass in an HIV-infected 30-yr-old homosexual man. In fine-needle aspiration smears, exuberant vascular proliferation associated with multinucleated giant-cell reactions was found within the granular exudate of PC.
Yang
G C
GC
Department of Pathology, New York University Medical Center, New York, New York, USA. grace.yang@nyu.edu
D000328:Adult; D000818:Animals; D001005:Anus Neoplasms / Q000150:complications; D001649:Bile Duct Diseases / Q000150:complications / Q000175:diagnosis* / Q000382:microbiology; D001707:Biopsy, Needle; D001913:Bowen's Disease / Q000150:complications; D002278:Carcinoma in Situ / Q000150:complications; D003135:Common Bile Duct; D003937:Diagnosis, Differential; D015658:HIV Infections / Q000150:complications; D006801:Humans; D008297:Male; D011010:Pneumocystis; D016720:Pneumocystis Infections / Q000150:complications / Q000175:diagnosis*; D012871:Skin Diseases / Q000150:complications