Question

which characteristic suggests malignant degeneration of an enchondroma? a) periosteal reaction b) flocculent calcific center c) intact cortical margin d) pathological fracture

Explanation:

Enchondromas are benign cartilage tumors. A periosteal reaction indicates bone irritation from aggressive growth, a sign of malignant transformation (chondrosarcoma). Flocculent calcification and intact cortical margins are typical of benign enchondromas, while pathological fractures can occur in both benign and malignant lesions but are not specific for degeneration.

Answer:

A) periosteal reaction