Paediatric renal masses. Some experiences with ultrasound and arteriography.

Renal masses in children are common, their pathology varying in different age groups. Using ultrasound to establish a diagnosis, the supine position should first be attempted. For black-and-white echography a medium frequency of 2,5 megahertz is suitable, but careful technique and interpretation are essential. Arteriography using a 70-mm camera is not suitable for selective evaluation of avascular masses. Four illustrative cases to show diagnostic points and pitfalls are recorded.