[Retrograde renal phlebography with balloon occlusion of the renal artery. Technique and scope of a new method (author's transl)].

A new method of retrograde phlebography of the kidney is described; it is carried out by using a balloon catheter in the renal artery for occluding the circulation. The procedure has been carried out in 13 patients without complication. Early experience has provided very good results in the diagnosis of malignant renal tumours; invasion into the venous system can be demonstrated radiologically. In particular, in cases of carcinoma of the renal pelvis, this method represents a significant improvement of the hitherto unsatisfactory angiographic techniques.