The significance of digital subtraction angiography (DSA) before operative treatment of hypernephroma in a horseshoe kidney.

A case of hypernephroma in a horseshoe kidney is reported in a patient with total situs inversus organorum. The diagnostic procedures are discussed, and the significance of digital subtraction angiography for both diagnosis and treatment is emphasized, as the presentation of the arterial and venous supplies is of great value for guidance in the surgical intervention, particularly when congenital malformations are present.