<unk>  is a rare, benign non-neoplastic condition with no known cause. It is considered a fibrovascular defect. Campanacci described this condition in two leg bones, the tibia and fibula, and coined the term. This condition should be differentiated from Nonossifying fibroma and fibrous dysplasia of bone.
Osteofibrous dysplasia
Fibrous dysplasia of bone
Osteochondrosis
Osteochondroma
Osteoid osteoma
Osteopetrosis
Myositis ossificans
Bone cyst