Long-term survival following radical prostatectomy in Japanese men with clinically localized prostate cancer: a single institutional study.
BACKGROUND
We evaluated the outcome of radical prostatectomy to provide information about long-term survival following this procedure.


METHODS
One hundred and twenty-three otherwise healthy Japanese patients with clinically localized tumors underwent radical prostatectomy. Treatment outcomes were measured in terms of clinical progression-free survival, prostate cancer-specific survival and overall survival. Overall survival was compared with expected survival of age-matched Japanese men.


RESULTS
For these 123 patients, clinical progression-free survival and prostate cancer-specific survival at 10 years were 72.5% and 86.4%, respectively. Results of Cox multivariate analysis showed that only pathological stage (P = 0.047) and tumor grade (P = 0.009) were independent predictors of clinical progression. Only tumor grade was a statistically significant independent predictor (P = 0.048) in terms of prostate cancer death. Both the 10 and 15-year overall survival rates for these 123 patients were 58.6%, whereas the expected survival of age-matched Japanese men was 65.0% at the 10-year follow up, and 43.8% at the 15-year follow up.


CONCLUSIONS
The long-term overall survival in this surgically treated group is comparable to the expected survival rate of age-matched Japanese men. These results might be useful in counselling patients with clinically localized prostate cancer.
Hachiya
Takahiko
T
Department of Urology, Nihon University School of Medicine, 30-1 Oyaguchikamimachi Itabashi-ku, Tokyo 173-8610, Japan. hachiya@med.nihon-u.ac.jp
Okada
Yasuhiro
Y
Kawata
Nozomu
N
Hirano
Daisaku
D
Yoshida
Toshio
T
Okada
Kiyoki
K
Takimoto
Yukie
Y
D000368:Aged; D000369:Aged, 80 and over; D018450:Disease Progression; D005500:Follow-Up Studies; D006801:Humans; D007564:Japan; D008297:Male; D008875:Middle Aged; D011468:Prostatectomy; D011471:Prostatic Neoplasms / Q000401:mortality* / Q000601:surgery*; D012189:Retrospective Studies; D012307:Risk Factors; D015996:Survival Rate