下顎骨喙狀突的類創傷性骨化性肌炎之骨性軟骨瘤─病例報告與文獻回顧

Myositis Ossificans Traumatica Mimicking Osteochondroma on the Mandibular Coronoid Process-A Case Report and Review of the Literatures

邵孔昱(Kung-Yu Shao) ； 林永和(Yun-Ho Lin) ； 彭伯宇(Bou-Yue Peng)

《臺灣口腔顎面外科學會雜誌》 31卷3期 (2020/09) Pp. 235-244

摘要

骨性軟骨瘤為一常見、有軟骨組織蓋帽所覆蓋之良性骨腫瘤。通常發生於身體中軸骨頭的末端，但發生於顏面骨區域、甚至下顎骨喙狀突的案例則非常罕見。一旦骨軟骨瘤發生在下顎骨喙狀突，往往會造成病人的張口受限。而這樣臨床症狀與其放射學上的表現可能在診斷上會與創傷性骨化性肌炎：一種肌肉因創傷造成骨頭生成的不常見疾病產生混淆。本篇文章中我們提出一位患有顳顎關節障礙之中年女性，在接受反覆的顳顎關節手術後所產生的類創傷性骨化性肌炎之骨性軟骨瘤，從臨床與影像學上的檢查、手術切除、病理診斷與術後追蹤的過程，並簡要的回顧了當前文獻。

關鍵字

骨性軟骨瘤 ； 下顎骨喙狀突 ； 顳顎關節障礙 ； 創傷性骨化性肌炎

並列摘要

Osteochondroma is a common cartilage capped benign bone tumor. It usually occurs on the end of the axial long bone but very rare on the craniofacial skeleton, even the mandibular coronoid process. It usually causes open mouth limitation when it occurs on the coronoid process, which is similar to myositis ossificans traumatica, an uncommon disease with bone formation in the muscle which was caused by trauma, and usually causes the misdiagnosis. The epiphyseal cartilage of the craniofacial bone spread through the defect of the periosteum which was caused by trauma is one of the suspected etiology of the osteochondroma occurs in this region. Here we present a 47-year-old woman with past history of temporomandibular joint disorder who suffer from osteochondroma on the right mandibular coronoid process with mouth opening difficulty and extreme pain at right TMJ area after repeated TMJ surgery-which was diagnosis as myositis ossificans traumatica in the beginning but the final tissue proof was osteochondroma. As well as the surgical procedure, we also present the post-operative outcome and further literatures review.

並列關鍵字

Osteochondroma ； Mandibular coronoid process ； Temporomandibular joint disorder ； Myositis ossificans traumatica