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J Pediatr Urol. 2007 Aug;3(4):340-1. doi: 10.1016/j.jpurol.2006.10.003. Epub 2006 Nov 28.

Metanephric adenoma: a rare differential diagnosis of renal tumor in children.

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  • 1Department of Morphology, Federal University of Juiz de Fora, Juiz de Fora, MG, Brazil. jmbnetto@uropedjf.com.br


Metanephric adenoma is an extremely rare tumor of the kidney. The clinical and anatomic characteristics are not yet well defined, but it is currently considered to be a benign tumor with a good prognosis, although recently two metastatic cases have been reported. Around 50% of cases are incidental findings, and symptoms include polycythemia, abdominal pain, hematuria and palpable mass. The morphological characteristics are similar to those of Wilms' tumor, suggesting a common embryological precursor. We present here the youngest girl yet to be reported with a diagnosis of metanephric adenoma.

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