Intravesical ultrasonography as an aid to study the size of bladder cancers.

: On clinical examination of 50 patients with bladder cancer the authors performed intravesical ultrasonography. By this method they never failed to detect the tumours. The stage of the pathological material obtained by operation or at autopsy was compared with that obtained by the intravesical ultrasonography. In 88% of the cases the two classifications gave identical results. By ultrasonography the pathologic stage was overestimated in 4, and underestimated in 2 cases. Intravesical ultrasonography can be combined with cystoscopy. It is a fast procedure and an ideal supplement to cystoscopy. The combination of the two methods permits the localization of intravesical tumours as well as the estimation of invasion and of the degree of infiltration.