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Seol, Park, Bahk, and Min: Study of Prostate of Korean Young Adult Using Transrectal Ultrasonography
Original Article
Korean Journal of Urology

Korean Journal of Urology 2008; 49(8): 720-726.

Published online: 31 August 2008

DOI: https://doi.org/10.4111/kju.2008.49.8.720

Study of Prostate of Korean Young Adult Using Transrectal Ultrasonography

Seung Hun Seol, Yeon Won Park, Jong Yoon Bahk1, Seung Ki Min

Department of Urology, National Police Hospital, Seoul, Korea.

1Department of Urology, College of Medicine, Gyeongsang National University, Jinju, Korea.

msk0701@hanmail.net

Received 9 May 2008       Accepted 26 June 2008

Copyright © 2008 The Korean Urological Association

Abstract

Purpose

The prostate of the young adult is not a subject which has received much attention, and the vast majority of prostate studies have placed their emphasis predominantly on elderly patients. It seems, then, that an investigation of the prostate in younger patients is warranted, and perhaps long past due. Thus, we attempted to determine the mean prostate volume in Koreans in their 20's. We also reported on the relationships between prostate size and body mass index, as well as body surface area, and compared the prostates of normal Korean youths with those of chronic prostatitis patients.

Materials and Methods

Between March 2002 and February 2008, we chronicled 583 cases of transrectal ultrasonography (control group: 271, chronic prostatitis group: 314) and calculated prostate volumes via the biplane method. 178 of the cases in the chronic prostatitis group were again examined after treatment. In all of the cases, body mass index and body surface area were assessed.

Results

The mean age of the patient was 22.83±2.46 years. The mean prostate volume of the 583 young adults was 15.58±3.11ml (control group: 15.61±3.16ml, chronic prostatitis group: 15.56±3.07ml). We ensured that there were no differences between the normal group and the chronic prostatitis group. The prostate volumes of the chronic prostatitis patients made no odds with the treated prostates. Additionally, prostate volume was directly proportional to the body mass index and the body surface area.

Conclusions

The prostate volume of young Korean adults in their 20's was approximately 15.6ml. The development of chronic prostatitis in young men had no appreciable effect on prostate size, but was shown to induce a variety of histologic changes in the prostate, and these changes were similar to those observed in older patients.

Keywords: Prostate volume, Transrectal ultrasonography, Chronic prostatitis, Body mass index, Body surface area

Figures and Tables

Fig. 1
Prostate volume measurements using transrectal ultrasonography. AP: anteroposterior diameter, Trans: transverse length, Long: longitudinal length.
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Fig. 2
Scattergram of prostate volume versus body mass index (BMI) (kg/m2) in 583 differentiating between the normal group and chronic prostatitis group. A weak positive correlation is noted (r=0.223, p<0.001). Normal group (n=271); r=0.216, p<0.001, Chronic prostatitis (n=312); r=0.232, p<0.001
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Fig. 3
Scattergram of prostate volume versus body surface area (BSA) (kg/m2) in 583 differentiating normal group and chronic prostatitis group. Prominent positive correlation is noted (r=0.586, p<0.001). Normal group (n=271); r=0.549, p<0.001, Chronic prostatitis (n=312); r=0.625, p<0.001
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Fig. 4
Prostate in sagittal plane. (A) The prostate of a 23-year-old man. Flat prostatic upper margin faces into bladder. Prostatic urethra is nearly linear. Arrow indicates membranous urethra. (B) The prostate of a 57-year-old man. Prostate protrudes into bladder bilobularly. Prostatic urethra lines curved. B and P imply urinary bladder and prostate, respectively.
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Table 1
Prostate volume by four examiners
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SD: standard deviation, p-value by one-way ANOVA test

Table 2
Prostate volume comparison between normal group and chronic prostatitis group
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SD: standard deviation, CP: chronic prostatitis, p-value by Student's t-test

Table 3
Prostate volume compared between 1st (pre-treatment) and 2nd (post-treatment) TRUS for chronic prostatitis
kju-49-720-i003

SD: standard deviation, p-value by Student's t-test (paired), TRUS: transrectal ultrasonography

Table 4
Body mass index and body surface area for normal group and chronic prostatitis group
kju-49-720-i004

SD: standard deviation, BMI: body mass index, BSA: body surface area, CP: chronic prostatitis, p-value: mean BMI and BSA analysis between normal group and chronic prostatitis group, Student's t-test

Table 5
Transrectal ultrasonographic findings of 312 patients in their twenties with chronic prostatitis
kju-49-720-i005

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