Renal ultrasonography: an updated approach to the diagnosis of renal cyst.

Abstract

Ultrasonic B-scanning has proved to be accurate in determining whether a renal mass is solid or cystic. It is, therefore, an ideal technique by which to select those renal masses (cysts) which are suitable for percutaneous puncture for the purpose of diagnosis. When a definite cyst pattern is indicated by the ultrasonogram, percutaneous puncture is performed. A clear aspirate with negative cytology and normal LDH is considered diagnostic of benign renal cyst. If a solid mass is suggested by ultrasonography, renal angiography is performed. The results of such studies in 84 patients are discussed.