Diagnostic ultrasound in urology.

Diagnostic ultrasound has been used over the last eight years for the demonstration of various space-occupying lesions of the urogenital tract, for the estimation of the prostate size and for the identification of intrascrotal processes and tumours. 918 patients were studied by this method. In 595 (87.3 per cent) of the 682 surgical cases in this series ultrasonic diagnosis was confirmed by the surgical finding. False-positive and false-negative results totalled 17.7 per cent. The method is particularly suited for the differential diagnosis of renal cysts from tumours without the need for other procedures involving discomfort to the patients. This procedure, which is free from any iatrogenic hazard, provides accurate information on the size and structure of space-occupying lesions.