[Nephroblastoma in adults]

Nephroblastoma is very rare in adults and must be differentiated from renal cell carcinoma. The diagnosis can only be made by means of histological examination, which can cause problems because of the various morphological types of the tumor. In this paper an account is given of the authors' experience in the diagnosis and treatment of four Wilms tumors in stages I (n = 1), II (n = 1), III (n = 1) and IV (n = 1) in adult patients. One patient died of a relapse, two patients are taking part in a follow-up study and one patient is undergoing chemotherapy.