Pathology: fibrous dysplasia
Fibrous dysplasia
Fibro-osseous proliferation; spindle-stellate cells
Eosinophilic cytoplasm
Monomorphic ovoid nuclei; inconspicuous mitotic activity
Interspersed between cells there is collagenous stroma; irregularly-shaped woven bone trabeculae with incomplete osteoblastic rimming; occasional osteoclast-type giant cells
Fibrous dysplasia
Fibro-osseous proliferation; spindle-stellate cells
Eosinophilic cytoplasm
Monomorphic ovoid nuclei; inconspicuous mitotic activity
Interspersed between cells there is collagenous stroma; irregularly-shaped woven bone trabeculae with incomplete osteoblastic rimming; occasional osteoclast-type giant cells
Fibrous dysplasia
Fibro-osseous proliferation; spindle-stellate cells
Eosinophilic cytoplasm
Monomorphic ovoid nuclei; inconspicuous mitotic activity
Interspersed between cells there is collagenous stroma; irregularly-shaped woven bone trabeculae with incomplete osteoblastic rimming; occasional osteoclast-type giant cells
Fibrous dysplasia
Fibro-osseous proliferation; spindle-stellate cells
Eosinophilic cytoplasm
Monomorphic ovoid nuclei; inconspicuous mitotic activity
Interspersed between cells there is collagenous stroma; irregularly-shaped woven bone trabeculae with incomplete osteoblastic rimming; occasional osteoclast-type giant cells
Fibrous dysplasia
Fibro-osseous proliferation; spindle-stellate cells
Eosinophilic cytoplasm
Monomorphic ovoid nuclei; inconspicuous mitotic activity
Interspersed between cells there is collagenous stroma; irregularly-shaped woven bone trabeculae with incomplete osteoblastic rimming; occasional osteoclast-type giant cells
Fibrous dysplasia
Fibro-osseous proliferation; spindle-stellate cells
Eosinophilic cytoplasm
Monomorphic ovoid nuclei; inconspicuous mitotic activity
Interspersed between cells there is collagenous stroma; irregularly-shaped woven bone trabeculae with incomplete osteoblastic rimming; occasional osteoclast-type giant cells
Fibrous dysplasia
Fibro-osseous proliferation; spindle-stellate cells
Eosinophilic cytoplasm
Monomorphic ovoid nuclei; inconspicuous mitotic activity
Irregularly-shaped woven bone trabeculae with incomplete osteoblastic rimming; occasional foamy macrophages
IHC: SATB2