title: Preoperative CT voiding cystourethrography using 16-multidetector CT in female urethral diverticulum.
abstract: OBJECTIVE
  To evaluate the clinical usefulness of preoperative CT voiding cystourethrography (CT-VCUG) using 16-multidetector computed tomography for female urethral diverticula.
  
  
  METHODS
  Preoperative CT-VCUG was performed in 15 consecutive patients who underwent urethral diverticulectomy from May 2004 to December 2012. The result of preoperative cystourethroscopy and surgical findings were recorded by a single surgeon and CT-VCUG findings including the location of osita were retrospectively reviewed by another urologist who was blinded to the surgical finding. The location of the ostium detected on CT-VCUG was compared descriptively with the intraoperative surgical and preoperative cystourethroscopic findings.
  
  
  RESULTS
  A total of 14 consecutive patients who underwent preoperative CT-VCUG and urethral diverticulectomy were included in the analysis. Ostia were detected on CT-VCUG in all cases, whereas ostia were identified in 10 patients (71.4%) by cystourethroscopy. Ostia were located between the 4 and 8 o'clock direction. Mean distance from the bladder neck to the ostium was 24.2 mm. Circumferential and horseshoe shaped diverticula were observed in 6 and 4 patients, respectively. The surgical findings correlated well with the CT findings.
  
  
  CONCLUSIONS
  Preoperative CT-VCUG can be useful in identifying the ostia of urethral diverticula in patients scheduled for urethral diverticulectomy and can provide structural information, useful to establish surgical strategy.
authors.affiliation: Department of Urology, Seoul National University Hospital, Seoul, Korea.
authors.forename: Young Ju
authors.initials: YJ
authors.lastname: Lee
authors.affiliation: Department of Urology, Seoul National University Hospital, Seoul, Korea.
authors.forename: Seung Jun
authors.initials: SJ
authors.lastname: Son
authors.affiliation: Department of Urology, Seoul National University Hospital, Seoul, Korea.
authors.forename: Jae-Seung
authors.initials: JS
authors.lastname: Paick
authors.affiliation: Department of Urology, Seoul National University Hospital, Seoul, Korea.
authors.forename: Soo Woong
authors.initials: SW
authors.lastname: Kim
mesh_terms: D000328:Adult; D003558:Cystoscopy; D004240:Diverticulum / Q000000981:diagnostic imaging* / Q000473:pathology; D005260:Female; D052776:Female Urogenital Diseases / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D006801:Humans; D008875:Middle Aged; D057234:Preoperative Period; D014057:Tomography, X-Ray Computed