Periosteal chondroma

Lobulated; hypocellular; sheets of polygonal-spindle cells
Eosinophilic cytoplasm
Hyperchromatic ovoid-reniform nuclei with occasional binucleation and minimal pleomorphism; inconspicuous mitotic activity
Abundant hyaline chondroid matrix with focal myxoid degeneration

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Bone Tumours

Chondrogenic Tumours