[Predominantly cystic renal metanephric adenoma. Case report].
OBJECTIVE
Metanephric adenoma is a relatively unfrequent asymptomatic embryogenic renal tumor which is generally diagnosed by an abdominal diagnostic tests indicated for other reasons. Differential diagnosis with benign and malignant tumors has to be performed.


RESULTS
We report one case of metanephric adenoma with intense necrotic-hemorrhagic and cystic changes with a size not previously referred in the literature.


CONCLUSIONS
Cystic and hemorrhagic changes in benign renal tumors make differential diagnosis with malignant tumors mandatory Surgery is necessary in almost all cases and histologic study will give the diagnosis.
Torres Gómez
Francisco Javier
FJ
Departamento de Anatomía Patológica, Hospital Universitario Virgen Macarena, Sevilla, España. javiertorresgomez@yahoo.es
Torres Olivera
Francisco Javier
FJ
García Escudero
Antonio
A
D000236:Adenoma / Q000473:pathology*; D000368:Aged; D006801:Humans; D007680:Kidney Neoplasms / Q000473:pathology*; D008297:Male