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MRI (sagittal STIR) of the cervical spine demonstrates diffuse hyperintensity of the paravertebral muscles.
Note: This case has been tagged as "legacy" as it no longer meets image preparation and/or other case publication guidelines.
Polymyositis is a rare autoimmune and sometimes paraneoplastic inflammatory myositis.
The term “polymyositis” is applied when the condition spares the skin, and “dermatomyositis,” when polymyositis is associated with a characteristic skin rash.
Polymyositis typically has a symmetric distribution, initially involving the proximal lower limb girdle and progressing to involve the proximal upper limb girdle, neck flexors, and pharyngeal muscles1.
- 1- O'connell MJ, Powell T, Brennan D et-al. Whole-body MR imaging in the diagnosis of polymyositis. AJR Am J Roentgenol. 2002;179 (4): 967-71. AJR Am J Roentgenol (citation) - Pubmed citation