[A case report: mucinous carcinoma of prostate]

We present a case of mucinous carcinoma of prostate. A 64-year-old man visited our hospital because of high score of prostate specific antigen (PSA). Prostatic biopsies were performed twice, but cancer was not found. Since the PSA value elevated gradually and a hard nodule in the right lobe of prostate became palpable, we repeated the biopsy that revealed cancer. Retropubic radical prostatectomy was performed and pathological examination revealed mucinous carcinoma of prostate. Mucinous carcinoma of prostate is rare, and to our knowledge, only 46 cases have been reported in the Japanese literature.