[Renal biopsy following ultrasonic localization of the kidney]

Venous urography is the method most frequently applied in the localization of the kidney for percutaneous renal biopsy. It, however, cannot be applied to patients with acute or chronic renal insufficiency as well as to patients, hypersensitive to roentgen contrast media. The ultrasound localization of the kidney solves that problem. The results from 25 renal biopsies are reported, performed after ultrasound localization of left kidney. That mode is less harmful for the patients, avoiding the occasional side effects of venous urography, the examination being cheaper.