Loose fascicles and strips of spindle-stellate cells with eosinophilic cytoplasm
Monomorphic ovoid-round nuclei
Pools of extracellular mucin with a so-called "pulmonary oedema" pattern; delicate branching vessels; occasional lipoblasts
RNA-seq: FUS::DDIT3
Strips and loose fascicles of spindle-stellate cells with eosinophilic cytoplasm
Occasional lipoblasts; typically 1-2 intracytoplasmic vacuoles
Monomorphic ovoid-round nuclei
Pools of extracellular mucin with a so-called "pulmonary oedema" pattern; delicate branching vessels
RNA-seq: FUS::DDIT3
Nests and fascicles of round-spindle-stellate cells with eosinophilic cytoplasm
Monomorphic ovoid-round nuclei
Pools of extracellular mucin with a so-called "pulmonary oedema" pattern; delicate branching vessels; occasional lipoblasts
RNA-seq: FUS::DDIT3
Loose fascicles of spindle-stellate cells with eosinophilic cytoplasm
Occasional lipoblasts; typically 1-2 intracytoplasmic vacuoles
Monomorphic ovoid-round nuclei
Abundant myxoid stroma; delicate branching vessels with a so-called "chicken-wire" or "crow's foot" pattern
Pools of extracellular mucin with a so-called 'pulmonary oedema' pattern; delicate branching vasculature; scattered small lipoblasts
RNA-seq: FUS::DDIT3
Loose fascicles of spindle-stellate cells with eosinophilic cytoplasm
Monomorphic ovoid-round nuclei
Myxoid stroma; delicate branching vessels; conspicuous lipoblasts
RNA-seq: FUS::DDIT3
Sheets of round-spindle cells with variable cytoplasm
Rare lipoblasts with granular eosinophilic cytoplasm
Interspersed areas of myxoid stroma containing delicate branching vasculature
RNA-Seq: FUS::DDIT3
Sheets of round cells with scant cytoplasm
Occasional lipoblasts; typically 1-2 intracytoplasmic vacuoles
Minimal intervening matrix, but areas of myxoid stroma can usually be found
RNA-Seq: FUS::DDIT3
Anatomizing sheets of round-spindle cells with scant cytoplasm
Occasional lipoblasts with granular eosinophilic cytoplasm and innumerable vacuoles
Interspersed areas of myxoid stroma containing delicate branching vasculature
RNA-Seq: EWSR1::DDIT3