title: Unusual primary prostatic malignancies.
abstract: Atypical prostatic cancer is defined as any malignancy of prostatic origin, excluding the common acinar prostatic adenocarcinoma. These atypical prostate cancers account for less than 5 percent of all prostatic malignancies. Because atypical prostatic malignancies occur rarely, little is known about their biologic behavior. To date, no large series of patients have been reported, and specific treatment protocols have yet to be defined. Herein we describe 5 new cases of atypical prostatic cancer. By reporting the occurrence of new cases, we believe a better understanding of the natural history of these lesions will emerge.
authors.affiliation: Department of Urology, New York Medical College, Valhalla.
authors.forename: M D
authors.initials: MD
authors.lastname: Efros
authors.forename: J
authors.initials: J
authors.lastname: Fischer
authors.forename: C
authors.initials: C
authors.lastname: Mallouh
authors.forename: M
authors.initials: M
authors.lastname: Choudhury
authors.forename: S
authors.initials: S
authors.lastname: Georgsson
mesh_terms: D002288:Adenocarcinoma, Mucinous / Q000473:pathology*; D000368:Aged; D000369:Aged, 80 and over; D018288:Carcinoma, Small Cell / Q000473:pathology* / Q000556:secondary; D005500:Follow-Up Studies; D006801:Humans; D007890:Leiomyosarcoma / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D011471:Prostatic Neoplasms / Q000473:pathology*