"All PEComas share a distinctive cellular morphology – peripheral epithelioid cells – that has no counterpart in normal tissue 4. These tumours appear as sheets and nests of epithelioid or spindle-shaped cells associated with blood vessel walls. They have granular eosinophilic cytoplasms."
"All PEComas share a distinctive cellular morphology – peripheral epithelioid cells – that has no counterpart in normal tissue 4. These tumours appear as sheets and nests of epithelioid or spindle-shaped cells associated with blood vessel walls. They have granular eosinophilic cytoplasms."
"smooth muscle: SMA, desmin, caldesmon"
"melanocytic: HMB-45, melan-A, MITF"