[Integrative imaging of nephroblastomas and nephroblastomatosis].

Studies on Wilms' tumor have led to intensive investigation of the relationship between nephroblastosis and nephroblastomatosis. Diagnostic strategies have changed: excretory urography is no longer recommended since all information needed is readily obtained by other imaging modalities. Ultrasound is used for the initial examination and confirms the presence and the localization of the mass. CT scan reveals perirenal invasion, and MRI allows the determination of tumor volume and confirmation or exclusion of vascular involvement.