[Diagnostic errors in nephroblastoma].

Abstract

We review 37 patients diagnosed of Wilms' tumor at the Clinica Infantil "La Fe", in the last ten years, looking at the misdiagnosed cases. In two children, histological study showed a multilocular renal cyst. We also report a case previously diagnosed as being a multicystic kidney; the histological study revealed, however, a cystic partially differentiated nephroblastoma. No case of extrarenal tumors was present in the misdiagnosed patients. We comment the difficulties to make a correct diagnosis when confronted with the above mentioned entities and before histological data are available.