[Inferior vena cava thrombus in nephroblastoma in a child. Diagnostic, surgical and prognostic problems].

The authors report a case of a child Wilm's tumour with inferior vena cava obstruction. The diagnostic, technical and prognostic features are discussed. Ultrasonography appears to be the best diagnostic method to confirm thrombus in the vena cava and allows the choice of an appropriate surgical technique. The presence of vena cava thrombus does not alter the prognosis.