Fibro-osseous lesions commonly include which entities?

Fibro-osseous lesions commonly include which entities?

• A. Osteoma, Ossifying Fibroma, and Fibrous Dysplasia
• B. Osteosarcoma, Chondrosarcoma
• C. Osteomyelitis, Ewing sarcoma
• D. Fibrosarcoma, Myxoma

Answer: (A)

Fibro-osseous lesions are disorders in which fibrous connective tissue replaces normal bone, often with irregular mineralized material interspersed. Classic examples are osteoma (benign bone tumor with mature bone), ossifying fibroma (a benign fibro-osseous neoplasm with fibrous stroma and mineralized components, common in the jaw), and fibrous dysplasia (bone replaced by fibrous tissue with immature woven bone). The other options don’t fit this category because they represent malignant bone tumors (osteosarcoma, chondrosarcoma, Ewing sarcoma), infectious/inflammatory bone disease (osteomyelitis), or soft-tissue/mucinous tumors (fibrosarcoma, myxoma). Thus, osteoma, ossifying fibroma, and fibrous dysplasia are the typical fibro-osseous lesions.

Fibro-osseous lesions are disorders in which fibrous connective tissue replaces normal bone, often with irregular mineralized material interspersed. Classic examples are osteoma (benign bone tumor with mature bone), ossifying fibroma (a benign fibro-osseous neoplasm with fibrous stroma and mineralized components, common in the jaw), and fibrous dysplasia (bone replaced by fibrous tissue with immature woven bone). The other options don’t fit this category because they represent malignant bone tumors (osteosarcoma, chondrosarcoma, Ewing sarcoma), infectious/inflammatory bone disease (osteomyelitis), or soft-tissue/mucinous tumors (fibrosarcoma, myxoma). Thus, osteoma, ossifying fibroma, and fibrous dysplasia are the typical fibro-osseous lesions.