title: Comparative Analysis of Outcomes after Transurethral Resection of the Prostate according to Prostate Shape Shown by Transrectal Ultrasonography.
abstract: OBJECTIVE
  Transrectal ultrasonography (TRUS) is a non-invasive modality widely used in urology on an outpatient basis to measure the volume and anatomical structure of the prostate. However, the prostate volume measured by TRUS often varies from test to test. The aim of this study was to determine the clinical significance of the different shapes of the prostate, as shown by TRUS before and after transurethral resection of the prostate (TURP).
  
  
  METHODS
  We evaluated 103 patients who underwent TURP. TRUS was performed preoperatively, and the International Prostatic Symptom Score (IPSS) and quality of life (QoL) were assessed preoperatively and at 6 months postoperatively. Patients were classified into two groups: patients with a bilaterally enlarged transitional zone were assigned to group A, and those with a protruding retrourethral zone were assigned to group B.
  
  
  RESULTS
  There were no statistically significant differences between the two groups in preoperative variables. However, postoperative IPSS scores were lower in group A than group B (9.87+/-6.15 vs. 13.18+/-8.07, p=0.02). With regard to postoperative IPSS scores relative to preoperative IPSS scores, both groups showed a significant decrease, but group A experienced a significantly greater decrease than group B (13.43+/-7.47 vs. 8.67+/-8.33, p=0.005).
  
  
  CONCLUSIONS
  Patients with a prostate protruding into the bladder have less of a decrease in their IPSS scores after TURP, compared to patients that do not have prostate protrusion, meaning that patients with protrusion experience less symptomatic relief.
authors.affiliation: Department of Urology, Wonju Christian Hospital, Yonsei University Wonju College of Medicine, Wonju, Korea.
authors.forename: Hyo Serk
authors.initials: HS
authors.lastname: Lee
authors.forename: Sung Jin
authors.initials: SJ
authors.lastname: Kim
authors.forename: Jae Mann
authors.initials: JM
authors.lastname: Song
authors.forename: Kwang Jin
authors.initials: KJ
authors.lastname: Kim
authors.forename: Hyun Chul
authors.initials: HC
authors.lastname: Chung