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Renal pseudotumors due to ectopic accessory renal arteries: the angiographic diagnosis.

Renal pseudotumor composed of an over-growth of normal parenchymal tissues is an occasional sequela of a variety of insults to a kidney.These insults may be related to a kidney’s function or its development.Only a few of the congenital or developmental malformations responsible for producing pseudotumors have been described in the literature. The angiographic demonstration of renal pseudotumors seen in the kidneys of 2 patients with ectopic arterial supplies is described in this report.The mechanism of pseudotumor development in these malformations is also discussed.