title: [Transabdominal ultrasound measurement of intravesical prostatic protrusion helps diagnosis of benign prostatic obstruction].
abstract: OBJECTIVE
  To evaluate the measurement of intravesical prostatic protrusion (IPP) by transabdominal ultrasonography (TAUS) in the diagnosis of benign prostatic obstruction (BPO).
  
  
  METHODS
  We studied the clinical data of 109 BPH patients referred for lower urinary tract symptoms (LUTS) from April 2005 to December 2006. IPP was measured by TAUS, urodynamic parameters such as Qmax and PdetQmax obtained by urodynamic studies and AG values calculated. The patients were divided into an obstruction and a non-obstruction group according to their AG values.
  
  
  RESULTS
  IPP was found statistically different between the obstruction and non-obstruction groups (P<0.001) and positively correlated with the AG value (r=0.729, P=0.001). With the cutoff at IPP > or = 10 mm for the diagnosis of BPO, the sensitivity, specificity and accuracy of the diagnosis were 89.9%, 97.5% and 92.7%, respectively.
  
  
  CONCLUSIONS
  The measurement of IPP by TAUS offers a valuable help for the diagnosis of BPO.
authors.affiliation: Department of Urology, Second Hospital Affiliated to Wenzhou Medical College, Wenzhou, Zhejiang 325027, China. zjblazer2001@163.com
authors.forename: Hai-Feng
authors.initials: HF
authors.lastname: Yu
authors.forename: You-Hua
authors.initials: YH
authors.lastname: He
authors.forename: Kai-Yuan
authors.initials: KY
authors.lastname: Yu
authors.forename: Qian
authors.initials: Q
authors.lastname: Wang
authors.forename: Pin-Tong
authors.initials: PT
authors.lastname: Huang
authors.forename: Yan
authors.initials: Y
authors.lastname: Yang
authors.forename: Dao-Zhu
authors.initials: DZ
authors.lastname: Wu
authors.forename: Ying-He
authors.initials: YH
authors.lastname: Chen
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D019160:Endosonography / Q000379:methods*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011467:Prostate / Q000000981:diagnostic imaging; D011470:Prostatic Hyperplasia / Q000000981:diagnostic imaging* / Q000503:physiopathology; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D001743:Urinary Bladder / Q000000981:diagnostic imaging* / Q000503:physiopathology; D001748:Urinary Bladder Neck Obstruction / Q000175:diagnosis / Q000503:physiopathology; D014563:Urodynamics