rearranged primary renal myoepithelial carcinoma: a diagnostic conundrum
Primary renal myoepithelial carcinoma is an exceedingly rare neoplasm with an aggressive citronella horse shampoo 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 bio