[Computerised tomography as a means to classify bladder tumours according to stages (author's transl)]

On the basis of examinations carried out in 27 patients (26 histologically verified carcinomas of the bladder), it is shown that computerised tomography considerably improved the preoperative classification, into stages, of the bladder tumours coming up for surgery. Endovesical growth cannot be differentiated with certainty. Perivesical expansion of tumours and the identification of lymphatic node metastasis can be covered significantly better by computerised tomography than by other methods.