Blunt abdominal traumas are frequently connected with renal injuries. Adequate clinical symptoms and changes demonstrated by secretion urography refer to a renal trauma. An exact statement concerning kind, localisation and size of the injury may preoperatively be got only by renovasography. In 37 patients in 17 cases unconspicuous angiographic findings were made. Here superficial ruptures of the parenchyma once escaped demonstration. 6 times up to now unknown preexisting renal diseases without proof of a sequel of traumas were the result. In 2 cases moderately severe and in 3 patients severe renal traumas appeared.