Obstructive uropathy

The prenatal diagnostic has still today no impact in fetal surgery of obstr uctive uropathy. The leading pathology in obstructive uropathy is the UJO w ith 40%, followed by POM in 13,4% and valves in 9,1%. In obstructive uropat hy US investigations are in the first row followed by nuclearmedicine and X -ray investigations. The diuretic MAG 3 is nowadays the "gold standard" in deciding, wether operative or conservative treatment should be in the first row. The most difficult situation is for patients with posterior urethral valves, where the immediate intensiv care treatment is of enormerous value, especially for preventing the function of the upper renal tract.