[Metanephric adenoma. Case report].

Objective: Metanephric adenoma is an unfrequent renal neoplasm, usually asymptomatic. Differential diagnosis with other renal tumors has to be performed.
Methods/results: We report the case of a 67 years old woman with a metanephric adenoma.
Conclusions: Metanephric tumors comprise a pathologic spectrum of lesions. At one end of the pathologic spectrum are the metanephric adenomas. These tumors usually behave in a benign fashion. It is important to differentiate metanephric adenoma from clinically aggressive renal tumors.