Fibrous<unk>  is a disorder where normal bone and marrow is replaced with fibrous tissue, resulting in formation of bone that is weak and prone to expansion. As a result, most complications result from fracture, deformity, functional impairment, and pain. Disease occurs along a broad clinical spectrum ranging from asymptomatic, incidental lesions, to severe disabling disease. Disease can affect one bone (monostotic), multiple (polyostotic), or all bones (panostotic) and may occur in isolation or in combination with café au lait skin macules and hyperfunctioning endocrinopathies, termed McCune–Albright syndrome. More rarely, fibrous<unk>  may be associated with intramuscular myxomas, termed Mazabraud's syndrome. Fibrous<unk>  is very rare, and there is no known cure. Fibrous<unk>  is not a form of cancer.
Fibrous dysplasia of bone
Fibrodysplasia ossificans progressiva
Osteofibrous dysplasia
Giant-cell tumor of bone
Osteoma cutis
Myositis ossificans
Diffuse idiopathic skeletal hyperostosis
Osteitis fibrosa cystica