Table 1.

Compared clinical, radiological and pathological features of enchondroma and low-grade chondrosarcoma

	Enchondroma	Low-grade chondrosarcoma
History and physical examination	Younger patients Rarely pain Appendicular skeleton Phalanx, Ec almost 100%	Patients aged >25 years Inflammatory pain Axial skeleton
Imaging	No periosteal reaction No or minimal endosteal scalloping No changes during follow-up No soft tissue mass	Periosteal reaction and microfractures Endosteal scalloping Malignat change during follow-up Soft tissue mass
Biopsy	Typical encasement pattern No endosteal scalloping Multinodular aspect Surrounded by lamellar bone Not involved in bone marrow	Involved Haversian system Periosteal reaction, endosteal scalloping Occasional necrotic and haemorrhagic foci Involved in bone marrow