Correlation between the Penile Size and Prostatic Volume / 대한남성과학회지

PURPOSE: To evaluate the clinical correlation between penile size and prostatic volume. MATERIALS AND METHODS: A total of 196 men were included in this study, 96 patients diagnosed as benign prostataic hyperpalsia(BPH, mean age: 67.2+/-18.8) by transurethral ultrasonography(TRUS), and 100 healthy volunteers(mean age: 48+/-16.2). The stretched penile length and penile circumference were measured by one examiner. We compared penile size with prostatic volume. BPH patients were classified as group I(30~39 ml), group II(40~49 ml) and group III(above 50 ml) by prostatic volume. RESULTS: For penile length and penile circumference, the mean values were 12.3+/-2.0 cm and 9.1+/-1.1 cm in group I, 12.6+/-2.2 cm and 9.2+/-1.0 cm in group II, 13.9+/-2.7 cm and 9.8+/-1.2 cm in group III, and 12.3+/-1.3 cm and 9.0+/-1.2 cm in control group, respectively. Compared to the control group, penile size was significantly higher in group III(p <0.05). CONCLUSIONS: Larger prostatic volume, especially above 50 ml, is associated with a significant increase in penile size.

Correlation of the International Prostate Symptom Score with Uroflowmetric Findings and Prostate Volume / 대한비뇨기과학회지

PURPOSE: The present study was performed to assess whether the subjective information of the international prostate symptom score(I-PSS) correlated with prostate volume and uroflowmetric findings and could predict the degree of flowmetric impairment. MATERIALS AND METHODS: To establish the relationship among I-PSS, uroflowmetric findings, and prostate volume, we surveyed community-based samples of 600 men over the age 50. The questionnaire of Korean version of I-PSS was shared and self completed. The flow rate was measured by a portable device with at least more than a voided volume of 100, then the prostate volume was estimated by transrectal ultrasonography. The participants were categorized as obstructed or non-obstructed according to the uroflowmetric findings. The I-PSS and all individual components were compared with peak flow rate, average flow rate, and prostatic volume, and to the uroflowmetric categories. The I-PSS severity categories(mild 0-7, moderate 8-19, and severe> or =20) were also compared to the uroflowmetric assorted groups. RESULTS: Mean age of the 600 men was 64.3 years(ranging 50-88 years), and 37.7%, 40.7%, and 21.6% of them had mild, moderate, and severe symptoms, respectively. 164 men(27.3%) had uroflowmetrically impaired flow rate set on the basis of 10ml/s. Subject age was significantly associated with I-PSS, peak flow late, and prostatic volume. Significant correlation was found in any I-PSS parameters with uroflowmetric findings, but no correlation with prostate volume. I-PSS severity groups, when compared to the uroflowmetric groups, showed a statistically significant relationship. When the multivariate linear regression analysis was applied to determine the variable, which best predicted uroflowmetric obstruction, age was the most significant predictor of the uroflowmetric findings. CONCLUSIONS: I-PSS correlated with objective data from the uroflowmetry. Although I-PSS has been known to be neither an accurate tool nor specific for the diagnosis of BPH, it may be useful to evaluate and predict the severity of uroflowmetric impairment.

The relationship among PSA levels, prostatic volume and resected prostate weight / 대한비뇨기과학회지

The prostate-specific antigen is a serine protease which is found only in epithelial cells of prostatic origin. Benign and malignant primary, as well as metastatic prostate cells, elaborate this protein. Benign prostatic hyperplasia can be associated with elevated levels of PSA as determined by a monoclonal assay, and prostatic weight is the most important non-cancer factor variable of PSA elevation. We estimated the in vivo prostate gland volume and resected weight of prostate in 75 men using prolate ellipse formula ultrasound analysis from Jan. 1991 to June 1992. OF the men 43 (58 %) had a PSA value of 4ng/ml or less. The PSA value was greater than 4 but less than or equal to 10 in 19 men (25 %) and greater than 10 in 13 men (17 %). A total of 24 men (35 %) had a eland volume less then 25 cm3, 16% of whom had a PSA value greater than 4. Further analysis revealed that the incidence of a PSA value greater than 4 increased as the prostate volume increased (51 % for greater than or equal to 25 but less than or equal to 50 and 62.5 % for greater than 50). The incidence of a PSA Value greater than 10 increased as resected weight of prostate increased (25 % for greater than or equal to 21 but less than or equal to 30 and 75 % for greater than 30). We found a statistically significant association between prostate gland volume and resected specimen weight to the serum PSA concentration. The prostate gland volume can be a helpful adjunct in determining the significance of PSA value clinically.