[Problems concerning diagnosis and therapy of poorly vascularized malignant kidney tumors (author's transl)].

Clear directives for the indication of diagnostic and therapeutic procedures have as yet not been formulated. We postulate a solution using poorly vascularized and avascular tumors of the kidney verified by x-ray studies and surgical exploration. An attempt was made to achieve an exact diagnosis of poorly vascularized space occupying processes of the kidney (the available figures range from 3--10% among kidney tumors) using optimal economical standardized test methods. We suggest that the time between the first diagnosis and the surgical exploration be kept as short as medically responsible.