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Correlation between serum prostate specific antigen and prostate volume in Taiwanese men with biopsy proven benign
Yu-Lung Chang1, Alex T L Lin, Kuang-Kuo Chen
1Division of Urology, Department of Surgery, Taipei Veterans General Hospital, No. 201 Section 2 Shih-Pai Road, Taipei, Taiwan 11217, Republic of China.
Purpose:
We studied the correlation between serum prostate specific antigen and the volume of different zones of the prostate in Taiwanese men with biopsy proven benign prostatic hyperplasia.
Materials And Methods:
A total of 233 patients with a mean age of 71.4 years (range 42 to 89), serum prostate specific antigen less than 10 ng/ml and pathologically confirmed benign prostatic hyperplasia were enrolled in this study. Total prostate and transitional zone volumes were measured with transrectal ultrasonography. Peripheral zone volume was determined by subtracting transitional zone volume from total prostate volume. Correlations between patient age, total serum prostate specific antigen and the volume of each prostate zone were analyzed with the Pearson correlation coefficient. A linear regression model was used to determine the relationship between prostate specific antigen and prostate volume. The prostate specific antigen-prostate volume relationship in our patients was compared with published data on white and Japanese men.
Results:
Age did not significantly correlate with serum prostate specific antigen and prostate volume. Serum prostate specific antigen significantly correlated with the volume of each prostate zone. After log transformation the Pearson correlation coefficient between total prostate specific antigen and the volume of the whole prostate gland, the transitional zone and the peripheral zone were 0.369, 0.377 and 0.272, respectively (p <0.001). Taiwanese men had lower prostate volume per unit prostate specific antigen comparing with white men, while the prostate specific antigen-total prostate volume relationship between Taiwanese and Japanese men was similar.
Conclusions:
In Taiwanese men with biopsy proven benign prostatic hyperplasia the volume of each prostate zone has significantly correlates with serum prostate specific antigen. The prostate specific antigen-total prostate volume relationship in Taiwanese men is different from that in white men. However, the prostate specific antigen-total prostate volume relationship between Taiwanese and Japanese men is similar.