Hypocellular; spindle-stellate cells with loose fascicular pattern
Pale and eosinophilic cytoplasm with delicate wispy processes
Monomorphic ovoid nuclei; inconspicuous mitotic activity
Abundant myxoid stroma; delicate curvilinear vessels
DNA-seq: GNAS mutation (c.601C>T; p.Arg201Cys)
Hypocellular; spindle-stellate cells with loose fascicular pattern
Pale and eosinophilic cytoplasm with delicate wispy processes
Monomorphic ovoid nuclei; inconspicuous mitotic activity
Abundant myxoid stroma; delicate curvilinear vessels
DNA-seq: GNAS mutation (c.602G>A; p.Arg201His)
Lobulated and infiltrative; hypocellular; spindle-stellate cells with a loose fascicular pattern
Eosinophilic cytoplasm with delicate wispy processes
Monomorphic ovoid nuclei; inconspicuous mitotic activity
Abundant myxoid stroma with occasional cystic spaces; delicate thin-walled vessels; scattered aggregates of macrophages
Infiltrative; hypocellular; spindle-stellate cells with patternless distribution
Eosinophilic cytoplasm with delicate wispy processes
Monomorphic ovoid nuclei; inconspicuous mitotic activity
Abundant myxoid stroma, with small cystic spaces; delicate curvilinear vessels; scattered macrophages
Infiltrative; hypocellular; spindle-stellate cells with a loose fascicular pattern
Eosinophilic cytoplasm with delicate wispy processes
Monomorphic ovoid nuclei; inconspicuous mitotic activity
Abundant myxoid stroma, with occasional cystic spaces; delicate curvilinear vessels; scattered macrophages