[Ultrasonic nephrotomography in the differential diagnosis of renal tumors].

Renal ultrasonography was performed in 40 patients. Complex exploration was carried out in 12 patients with renal tumours, such as: urography, renal scintigrams, renal arteriography, ultrasonography and cavography. Laminography was proved to be an useful method in the positive and differential diagnosis of renal tumours, especially of cystic ones. Informations provided by this technique are not absolute, and these are some possibilities for errors which operate both ways: omission of malignancies or affirmation of malignancy when the lesion is benign. The method should be considered as complementary in the field of renal investigations and will be interpreted in the general context.