Ultrasonically Guided Percutaneous Puncture of Renal Masses

Abstract

The principle in percutaneous puncture of renal masses under the guidance of ultrasound is described. 34 tumours, 43 cysts and four lesions of various sorts were punctured. On cytological evaluation malignancy was confirmed in 82% of the tumour cases and in one case of a malignant cyst. Fluid was aspirated from 90% of the cysts. These percentages will probably increase with increasing experience.

It is suggested that suspected renal masses should be investigated primarily by i.v. pyelography and ultrasonic scanning. If a mass is encountered it should be punctured under the guidance of ultrasound, and the aspirate subjected to cytological evaluation. This will leave only a few questionable cases which should be submitted to arteriography.