Cellular; sheets of epithelioid cells
Eosinophilic cytoplasm
Monomorphic ovoid nuclei; occasional mitotic activity
Bands of sclerotic collagen; ectatic thin-walled vasculature
IHC: MUC4
RNA-seq: EWSR1::CREB3L1 gene fusion
Cellular; sheets of epithelioid cells
Eosinophilic cytoplasm
Monomorphic ovoid nuclei; inconspicuous mitotic activity
Thick collagen bands; ectatic thin-walled vasculature
IHC: MUC4
RNA-seq: FUS::CREB3L2 gene fusion
Cellular; nests and cords of epithelioid cells
Eosinophilic cytoplasm
Monomorphic ovoid nuclei; mitotic activity
Thin bands of sclerotic collagen; inconspicuous vasculature
IHC: MUC4
RNA-seq: EWSR1::CREB3L1 gene fusion