Hemangioma of the kidney is a rare disease. Bell1 found only 1 instance of hemangioma of the kidney in 30,000 necropsies. In this case the tumor was situated in the substance of the kidney, had not eroded into the renal pelvis and therefore had not caused any symptoms. Judd and Simon2 in 1928 were able to find only 11 cases of hemangioma of the kidney reported in the literature and added 1 case which they had observed. In 1941 Riley and Swann3 made a comprehensive review of the literature and were able to collect only 36 authentic cases. They added 1 case which they had observed. Since that time several cases have been reported,4 but not enough to justify another compilation of collected cases.
Two cases of hemangioma of the kidney have been observed at the Mayo Clinic. One of these cases has been reported by