[Differential diagnosis of space-occupying lesions of kidneys (comparison between IVP, angiography and ultra-sound) (author's transl)].

On 77 IVP's it can be shown that correct assessment of the identity of space-occupying lesions of the kidneys is difficult (correct diagnosis in 39% of cystic and 10% of solid conditions). Improvement can be expected from early tomography of IVP's by improved pictures of the parenchyma, mainly with ultra-sound which separates cystic from solid conditions. Correlation of these techniques appears sufficient for cystic processes. Angiography is indicated for solid tumors and doubtful ultra-sound findings.