Abstract
Myositis ossificans is a rare disease in which manifests as heterotopic bone formation within a muscle and is rarely found in the head or neck regions, including the masticator muscle. It should be considered as a differential diagnosis in patients of trauma with severe limitation of jaw opening. Panoramic radiographs and axial and coronal computed tomography (CT) scans can effectively delineate the calcified mass. Other imaging studies that may be helpful include magnetic resonance imaging (MRI), bone scans, and ultrasound.DOI: http://dx.doi.org/10.3329/bjms.v13i1.17441 Bangladesh Journal of Medical Science Vol. 13 No. 01 January2014: 73-75
Highlights
Myositis ossificans is a rare entity in which there is heterotopic bone formation within a muscle
We report a case of myositis ossificans traumatica involving the left masseter muscle which had developed following trauma of maxillofacial region
Myositis ossificans progressive is an autosomal dominant disease in which multiple, heterotopic ossifications develop in the soft tissues [13]; mostly seen in children and even it can cause pulmonary complications due to restricted movement of the respiratory muscles resulting in death [2]
Summary
Myositis ossificans is a rare entity in which there is heterotopic bone formation within a muscle. It is frequently reported in the orthopedic literature [1,2,3,4] and is rarely found in the head or neck [5,6]. We report a case of myositis ossificans traumatica involving the left masseter muscle which had developed following trauma of maxillofacial region. MDCT (Figure 2a, 2b and 2c) revealed bulky left masseter muscle with a irregularly outlined hyperdense lesion with dense corticated peripheral rim (s/o ossification) abutting the ramus & angle of left mandible; the underlying bone was normal. Partial resection of the calcified left master muscle was performed and the post-operative period was uneventful
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