[Small cell carcinoma of the prostate: a case report].

A 81-year-old man was admitted to our department with the chief complaints of pollakisuria and difficulty in voiding. He presented with increased serum PSA level (over 100 ng/ml). We performed biopsy of the prostate and found a moderately differentiated adenocarcinoma. Various urological examinations showed metastases to paraaortic lymph nodes and systemic bones. He was started-on hormonal therapy. Nine months from the start of hormonal therapy, this therapy was effective and the serum PSA level was decreased to 14 ng/ml. Thereafter, the serum PSA level and the tumor volume were increased and he died 29 months from the start of treatment. The autopsy revealed small cell carcinoma with adenocarcinoma of the prostate.