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Metanephric adenoma of kidney is a rare entity. It presents in young individuals and its association with polycythemia is well described. Differentiation from Wilm’s tumor and renal cell carcinoma is challenging and hence definitive diagnosis is made by histopathology with immunohistochemistry. Recognition of this entity is important as it has a more favourable clinical outcome compared with Wilms' tumor and renal cell carcinoma. We report a case of largest metanephric adenoma presenting with polycythemia incidentally detected in young female during blood donation and managed by radical nephrectomy.
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Manoharan et al. (2018) studied this question.
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