<unk>  (also known as<unk> ta) is a slow growing benign tumor of bone, occurring most commonly in the craniofacial skeletal structures, primarily in the nasal and paranasal (75-90%) sinuses.<unk>  arises from bone overgrowth, which is normally composed of connective tissue.<unk> s are slow growing tumors composed of compact or mature trabecular bone limited to craniofacial bones.<unk>  may be incidentally identified as a mass in the skull, mandible, or as the underlying cause of sinusitis or mucocele formation within the paranasal sinuses. When they are multiple, Gardner syndrome should be considered.<unk>  represents the most common benign neoplasm of the nose and paranasal sinuses. The causes remain uncertain, but commonly accepted theories propose embryologic, traumatic, or infectious causes.<unk> s are usually asymptomatic. Excision may be performed if<unk>  is responsible for symptoms.
Osteoma
Osteochondrosis
Osteochondroma
Osteoid osteoma
Osteoblastoma
Osteosarcoma
Osteopetrosis
Aneurysmal bone cyst