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Perivascular epithelioid cell neoplasms comprise a family of rare neoplasms composed of morphologically distinctive perivascular epithelioid cells exhibiting a “myomelanocytic” immunophenotype. The distinction of perivascular epithelioid cell neoplasms from other tumors with melanocytic and smooth muscle differentiation can be difficult. A recent study has suggested that perivascular epithelioid cell...
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