Metanephric adenofibroma

Metanephric stromal tumor was more recently described (Fig. 24.20) (Argani and Beckwith 2000). Mean patient age at diagnosis is 2 years. Gross examination typically revealed a fibrous lesion centered in the renal medulla containing smooth-walled cysts. Metanephric stromal tumor is histologically identical to the stromal component of metanephric adenofibroma. Patients may be treated with surgical excision alone. 

Metanephric adenofibroma (previously termed nephrogenic adenofibroma) contained a variable amount of a bland spindle cell stroma (Arroyo et al. 2001). Metanephric adenofibroma is a biphasic tu-... 

Arroyo MR, Green DM, Perlman EJ et al (2001) The spectrum of metanephric adenofibroma and related lesions clini-... 

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