Diagnostic problems in a Wilms' tumour of the horseshoe kidney

The authors report on a case of Wilms' tumour in a horseshoe kidney in a child with correct preoperative diagnosis. They emphasise the superiority of the ultrasound and CT scan studies. A brief discussion of the surgical approach in the different presentations is made. The authors suggest, because of the predisposition of the horseshoe kidney to develop Wilms' tumour to perform, an annual ultrasound study for its surveillance.