title: Circumscribed myositis ossificans of the masseter muscle: report of a case.
abstract: Myositis Ossificans (MO) is an unusual pathological entity still largely unknown, characterized by dystrophic calcification leading to heterotopic ossification of intramuscular connective tissue. The masticatory muscles are exceptionally involved. Four distinct types of myositis ossificans have been described: MO Progressiva, which is a genetic disorder involving several muscular groups; MO Circumscripta, limited to a single muscle and generally due to calcification of an intramuscular haematoma following severe trauma and progressive ossification; MO Pseudo-malignant limited to soft tissue and not associated to any trauma; MO associated to paraplegia. A case of circumscribed myositis ossificans of the masseter muscle in a 62 years-old woman is reported.
authors.forename: P
authors.initials: P
authors.lastname: Piombino
authors.forename: G
authors.initials: G
authors.lastname: Dell'Aversana Orabona
authors.forename: V
authors.initials: V
authors.lastname: Abbate
authors.forename: G
authors.initials: G
authors.lastname: Fini
authors.forename: G M
authors.initials: GM
authors.lastname: Liberatore
authors.forename: E
authors.initials: E
authors.lastname: Mici
authors.forename: E
authors.initials: E
authors.lastname: Belli
mesh_terms: D005260:Female; D006801:Humans; D008406:Masseter Muscle / Q000000981:diagnostic imaging* / Q000473:pathology* / Q000601:surgery; D008875:Middle Aged; D009055:Mouth; D009221:Myositis Ossificans / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D057605:Natural Orifice Endoscopic Surgery / Q000379:methods; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome