However, there are reports suggesting that trauma and the Epstein-Barr virus (EBV) may be significant risk factors. 2 , 3 Since the initial report of renal myopericytoma in 2010, only 12 additional cases have been documented, 4 , 5 , 6 , 7 , 8 , 9 , 10 bringing the total to 13 cases, including the one discussed in this article.
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