Pathology: chondroid lipoma

Lobulated with thin fibrous capsule; sheets of small polygonal cells

Eosinophilic and variably vacuolated, cytoplasm

Round, scalloped nuclei with mild atypia; inconspicuous mitotic activity

Interspersed there are mature adipocytes with abundant clear cytoplasm and small peripheral nuclei

Lobulated neoplasm bound by thin fibrous capsule

Sheets of small polygonal cells with eosinophilic, and variably vacuolated, cytoplasm

Round, scalloped nuclei with mild atypia; inconspicuous mitotic activity

Interspersed there are mature adipocytes with abundant clear cytoplasm and small peripheral nuclei

RNA-seq: C11orf95-MKL2 gene fusion

Lobulated neoplasm; sheets of polygonal cells

Eosinophilic and variably vacuolated cytoplasm

Round, scalloped nuclei with mild atypia; inconspicuous mitotic activity

Interspersed bands of hyaline stroma; nests and sheets of mature adipocytes with abundant clear cytoplasm and small peripheral nuclei