J Korean Androl Soc.  1994 Jan;12(1):43-49.

Correlation of Presumed Circle Area Ratio with Voiding Symptom in Benign Prostatic Hyperplasia

• Kim HW
• Moon YT
• Kim SC

Abstract

In benign prostatic hyperplasia(BPH), the severity of the voiding disturbance does not correlate well with the actual increase of the estimated volume of the prostate. It was reported that the degree of progression of the pathological state could be evaluated by estimating how closely the shape of the prostate approaches a circle. This idea was formulated as the theory of the presumed circle area ratio(PCAR) : the area of the maximum horizontal section of the prostate/the area of a presumed circle of which the circumference is equal to the circumference of the maximum horizontal section. Transrectal sonometrics was performed in 20 patients with BPH to investigate the correlation of PCAR with voiding symptom. Among 20 patients, 2(10%) were scored as having severe symptoms, 17(85%) moderate and 1(5%) mild by the Boyarsky with a mean score of 10.7(range 5 to 22). In addition, by the clinical scoring system, a score above 10 was present in 6 patients(30%), 5-9 points in 13(65%) and below 5 in 1(5%) with a mean score of 7.4(range 2 to 14). The volume of the prostate ranged from 25 to 100g(mean 40.8g) by digital rectal examination and from 24 to 120g(mean 48.0g) by transrectal ultrasonography. The measured prostatic volume by these two methods was similar in 12 patients(60%). The PCAR did not proportionally increase according to the prostatic volume. There was no significant correlation between the voiding disturbance and the PCAR or the prostatic volume. In conclusion, the voiding distrubance in patients with BPH seems not to be correlated with the prostatic volume or the PCAR.

MeSH Terms

Digital Rectal Examination
Humans
Prostate
Prostatic Hyperplasia*
Ultrasonography