Primary renal myoepithelial carcinoma is an exceedingly rare neoplasm with an aggressive phenotype and Ewing sarcoma breakpoint region 1 (EWSR1) rearrangement in a small fraction of cases. In addition to its rarity. the diagnosis can be challenging for the pathologist due to morphologic heterogeneity. particularly on the biopsy specimen. https://www.cascadianaturales.shop/product-category/collections/