title: Bilateral myositis ossificans of the masseter muscle after chemoradiotherapy and critical illness neuropathy--report of a rare entity and review of literature.
abstract: Myositis ossificans in the head and neck is a rare heterotropic bone formation within a muscle. Besides fibrodysplasia ossificans progressiva, traumatic and neurogenic forms are described in the literature. We are presenting the case of a 35-year-old female patient with a very rare form of MO of both masseter muscles after 4 weeks of intensive care because of complications (critical illness neuropathy) after chemotherapy. Therefore, special attention should be paid to surgical trauma. As in the present case, radiotherapy, long-time intubation with immobilization and critical myopathy and neuropathy can cause MO with severe problems, such as trismus and reduced mouth hygiene, which can lead to reduced quality of life.
authors.affiliation: University Hospital Zurich, Department of Craniomaxillofacial and Oral Surgery, Frauenklinikstr, 24 CH-8091 Zurich, Switzerland. astridkruse@gmx.ch
authors.forename: Astrid L
authors.initials: AL
authors.lastname: Kruse
authors.forename: Christine
authors.initials: C
authors.lastname: Dannemann
authors.forename: Klaus W
authors.initials: KW
authors.lastname: Grätz
mesh_terms: D000328:Adult; D003131:Combined Modality Therapy; D005260:Female; D006801:Humans; D008406:Masseter Muscle / Q000473:pathology*; D009221:Myositis Ossificans / Q000209:etiology* / Q000473:pathology; D009303:Nasopharyngeal Neoplasms / Q000628:therapy*; D011115:Polyneuropathies / Q000150:complications*; D014313:Trismus / Q000150:complications
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