[Transabdominal ultrasound measurement of intravesical prostatic protrusion helps diagnosis of benign prostatic obstruction].
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.
Yu
Hai-Feng
HF
Department of Urology, Second Hospital Affiliated to Wenzhou Medical College, Wenzhou, Zhejiang 325027, China. zjblazer2001@163.com
He
You-Hua
YH
Yu
Kai-Yuan
KY
Wang
Qian
Q
Huang
Pin-Tong
PT
Yang
Yan
Y
Wu
Dao-Zhu
DZ
Chen
Ying-He
YH
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