157 space-occupying lesions of the kidneys ( 89 cysts , 57 malignant tumours , 8 benign tumours , 1 abscess , 1 non-traumatic bleeding and a special form of inflammation , namely , xanthogranulomatous pyelonephritis ) which were observed in 2 years , were evaluated , using angiography , ultrasound and computed tomography .
C0022646
kidneys
C0034188
xanthogranulomatous pyelonephritis