長期にわたり開口障害を認めた筋突起の骨軟骨腫の1例

• Published in: 日本口腔外科学会雑誌 Vol. 65; no. 1; pp. 22 - 28
• Main Authors: 河野, 多香子, 山田, 耕治, 植埜, 修司, 松島, 由紀, 井関, 富雄, 森田, 章介
• Format: Journal Article
• Language: Japanese
• Published: 社団法人 日本口腔外科学会 20.01.2019
• Subjects: 筋突起; 開口障害; 骨軟骨腫
• ISSN: 0021-5163; 2186-1579
• DOI: 10.5794/jjoms.65.22

We report a case of osteochondroma of the coronoid process accompanied by long-term restricted jaw opening. The patient, a 51-year-old man, was referred to our hospital because of a 31-year-history of limited mouth opening. The maximum interincisal opening was 20 mm. Panoramic radiography showed a radiographic opacity in the tip of left coronoid process extending to the zygomatic arch. CT showed a left enlarged fungiform coronoid process and deformation of the zygomatic arch. The left coronoid process was excised by an intra-oral approach. Two years and six months postoperatively, the maximum interincisal opening was 42 mm, and there has been no recurrence of the tumor.