Clin Pain.  2023 Dec;22(2):131-135. 10.35827/cp.2023.22.2.131.

Myositis Ossificans in Scalene Muscle Clinically Mimicking Cervical Herniated Intervertebral Disc

• Hong G
• Kim W

• KMID: 2550416
• DOI: http://doi.org/10.35827/cp.2023.22.2.131

Abstract

Myositis ossificans (MO) is a benign ossified mass that could develop after muscle injury. Typically, it is easily diagnosed based on a history, physical examination and imaging. However, atypical cases can pose challenges in diagnosis. A 31-year-old male presented with left scapula pain that started two weeks ago. Physical examination showed findings similar to cervical herniated intervertebral disc (C-HIVD), and ultrasound examination revealed MO in left anterior scalene muscle. With conservative treatment, a follow-up ultrasound two weeks later revealed mostly absorbed calcifications. MO can occur in atypical locations, such as the scalene muscle, and in such cases, it may present with clinical features similar to C-HIVD. Therefore, clinicians should consider this possibility in patients with suspected C-HIVD. Additionally, it can progress and resolve rapidly, contrary to what was previously known. The experience from this case may help in determining the diagnostic and treatment approach for atypical MO in future clinical settings.

Keyword

Myositis ossificans; Ultrasonography