[Comments on the surgical treatment of hydronephrosis].

The author first recalls that the first operation to correct hydronephrosis due to ureter stenosis was performed by Trendelenburg. He then defines the causal lesion of hydronephrosis and describes its etiology. He stresses that the only procedure for correcting hydronephrosis caused by stenosis of the juxtapyelic ureter is the removal of this portion, the lesion of which it is impossible to repair or correct. He criticizes the numerous operations proposed by different authors and even the partial removal of the renal pelvis. He points out that most of the operation procedures described as new, have already been published. He finally stresses that the best operation is the removal of the stenosed ureter followed by direct pyelo-ureter anastomosis and kidney draining by means of a tutor probe placed from the pelvis to the bladder during the operation and kept in place for a few days.