Zygomatic exostosis.
This report describes a rare case of restricted mandibular opening caused by zygomatic exostosis and hyperplasia of the coronoid process. Computed tomography revealed the presence of a pseudojoint between the exostosis and the enlarged coronoid process; the bony restriction was surgically removed through an intraoral approach. Only 3 similar cases have been reported in the literature.
D000328:Adult; D005096:Exostoses / Q000150:complications / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D014057:Tomography, X-Ray Computed; D014313:Trismus / Q000209:etiology; D015050:Zygoma / Q000000981:diagnostic imaging*