Epithelioid Angiomyolipoma : Melan-A
Section Editor: Dharam M. Ramnani, MD
Virginia Urology, Richmond, VA, USA
Image Description
Angiomyolipoma - Immunohistochemistry: Angiomyolipomas express melanocytic markers such as HMB-45 and Melan-A (shown here). Ultrastructurally, this corresponds to the presence of premelanosome-like organelles. The expression of melanocytic markers is more frequently and strongly seen with epithelioid variant of AML.