筋突起に生じた骨軟骨腫の1例  [in Japanese] A case of osteochondroma of the coronoid process  [in Japanese]

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Author(s)

    • 藤村 和磨 FUJIMURA Kazuma
    • 京都大学大学院医学研究科感覚運動系外科学講座口腔外科学分野 Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Kyoto University
    • 高橋 克 TAKAHASHI Katu
    • 京都大学大学院医学研究科感覚運動系外科学講座口腔外科学分野 Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Kyoto University
    • 家森 正志 YAMORI Masasi
    • 京都大学大学院医学研究科感覚運動系外科学講座口腔外科学分野 Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Kyoto University
    • 大久保 康則 OKUBO Yasunori
    • 京都大学大学院医学研究科感覚運動系外科学講座口腔外科学分野 Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Kyoto University
    • 別所 和久 BESSHO Kazuhisa
    • 京都大学大学院医学研究科感覚運動系外科学講座口腔外科学分野 Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Kyoto University

Abstract

Jacob disease is a rare condition that affects the coronoid process. In 1899, Jacob was the first to describe osteochondroma of the coronoid process, forming a pseudoarthrosis joint between the coronoid process and the zygomatic arch. A 21-year-old man with a 7-year history of progressive limitation of mouth opening was referred to our hospital by his dentist. The maximum interincisal opening was 20 mm. A radiographic examination showed a right enlarged fungiform coronoid process. Three-dimensional computed tomography clearly demonstrated the anatomic relation between the coronoid process and the surrounding bony structure. The coronoid process was bilaterally excised by an intraoral approach. Histopathological examinations revealed compact cortical bone surrounded by a thin band of cartilage tissue diagnosed as osteochondroma, which matched the characteristics of Jacob disease. After the operation, the maximum interincisal opening was 48 mm.

Jacob disease is a rare condition that affects the coronoid process. In 1899, Jacob was the first to describe osteochondroma of the coronoid process, forming a pseudoarthrosis joint between the coronoid process and the zygomatic arch. A 21-year-old man with a 7-year history of progressive limitation of mouth opening was referred to our hospital by his dentist. The maximum interincisal opening was 20 mm. A radiographic examination showed a right enlarged fungiform coronoid process. Three-dimensional computed tomography clearly demonstrated the anatomic relation between the coronoid process and the surrounding bony structure. The coronoid process was bilaterally excised by an intraoral approach. Histopathological examinations revealed compact cortical bone surrounded by a thin band of cartilage tissue diagnosed as osteochondroma, which matched the characteristics of Jacob disease. After the operation, the maximum interincisal opening was 48 mm.

Journal

  • Japanese Journal of Oral and Maxillofacial Surgery

    Japanese Journal of Oral and Maxillofacial Surgery 57(1), 25-29, 2011

    Japanese Society of Oral and Maxillofacial Surgeons

Codes

  • NII Article ID (NAID)
    130003397129
  • Text Lang
    JPN
  • ISSN
    0021-5163
  • Data Source
    J-STAGE 
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