title: Transitional cell carcinoma: cause of refractory cancer of prostate.
abstract: Four cases with a diagnosis of adenocarcinoma of the prostate are presented in which a histologic pattern of adenocarcinoma mixed with transitional cell carcinoma developed subsequently. Suggestions are made regarding the pathogenesis and diagnosis.
mesh_terms: D000230:Adenocarcinoma / Q000473:pathology*; D000368:Aged; D002295:Carcinoma, Transitional Cell / Q000473:pathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009362:Neoplasm Metastasis; D009378:Neoplasms, Multiple Primary / Q000473:pathology*; D011471:Prostatic Neoplasms / Q000473:pathology*