Denervation atrophy of the masticatory muscles in a patient with nasopharyngeal cancer: MR examinations before and after radiotherapy

We report on a patient with denervation atrophy of the masticatory muscles due to nasopharyngeal cancer who received therapeutic irradiation. Magnetic resonance imaging has significantly contributed to aid diagnosis of this pathology. Masticatory muscle atrophy should be a definitive finding of peri...

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Veröffentlicht in:	Dento-maxillo-facial radiology 2002-05, Vol.31 (3), p.204-208
Hauptverfasser:	Ariji, Y, Fuwa, N, Tachibana, H, Ariji, E
Format:	Artikel
Sprache:	eng
Schlagworte:	Carcinoma, Squamous Cell - complications Carcinoma, Squamous Cell - pathology Carcinoma, Squamous Cell - radiotherapy Chemotherapy, Adjuvant Cranial Nerve Neoplasms - pathology Dentistry Follow-Up Studies Humans Magnetic Resonance Imaging Male Mandibular Nerve - pathology Masseter Muscle - innervation Masseter Muscle - pathology Masticatory Muscles - innervation Masticatory Muscles - pathology Middle Aged Muscular Atrophy - etiology Nasopharyngeal Neoplasms - complications Nasopharyngeal Neoplasms - radiotherapy Neoplasm Invasiveness Nerve Degeneration Pterygoid Muscles - innervation Pterygoid Muscles - pathology Radiotherapy Dosage
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Zusammenfassung:	We report on a patient with denervation atrophy of the masticatory muscles due to nasopharyngeal cancer who received therapeutic irradiation. Magnetic resonance imaging has significantly contributed to aid diagnosis of this pathology. Masticatory muscle atrophy should be a definitive finding of perineural invasion caused by head and neck tumors. Radiologists should be familiar with this appearance to avoid confusion with tumor invasion of the muscle.
ISSN:	0250-832X
DOI:	10.1038/sj.dmfr.4600691