Journal of Ultrasound in Medicine, Vol 17, Issue 5 283-287, Copyright © 1998 by American Institute of Ultrasound in Medicine
Diffuse prostatic lesions: role of color Doppler and power Doppler ultrasonography
J. Y. Cho, S. H. Kim and S. E. Lee
Department of Radiology, Seoul National University, Korea.
The purpose of this study was to assess the role of color Doppler
ultrasonography and power Doppler ultrasonography in the identification of
diffuse prostatic lesions. Forty male patients underwent gray scale
transrectal ultrasonography, color and power Doppler sonography, and
transrectal ultrasonographically guided biopsy. Transrectal
ultrasonographically guided biopsy revealed cancer in 23 patients and
benign lesions in 17 patients. Among the prostatic cancers 82.6% (19 of 23)
showed increased flow signals, whereas 23.5% (four of 17) of benign lesions
showed increased flow signals on color or power Doppler ultrasonography. If
we consider increased flow signal on color or power Doppler sonography as a
sign of a prostate cancer in diffuse prostatic lesions, these modalities
have a sensitivity of 82.6%, specificity of 76.5%, and positive predictive
value of 82.6%. On the basis of our study, we may conclude that color and
power Doppler ultrasonography are useful in the identification of diffuse
prostatic lesions.