[Single and multiple cysts of the renal sinuses]

Uni- or bilateral cysts of the renal sinuses are not rare. Low rate of detection of such cysts can be explained by subclinical course of the disease and underestimation of sonography. Renal sinus cysts may exist in parallel with parenchymatous cysts. The diagnosis is made at sonography followed later by excretory urography and comparison of the results obtained. In asymptomatic renal sinus cysts dynamic sonographic examinations are indicated 1-2 times a year, when clinical symptoms appear surgical treatments is valid.