Last revised by Dr Yuranga Weerakkody on 09 Jul 2022

Myositis (plural: myositides) is the subset of myopathy characterized by inflammation of skeletal muscle.



Myositides can be generally categorized by etiology as follows 1:

Radiographic features

MRI is the gold standard modality for non-invasive evaluation of myositis, which shows a classic edema signal pattern (high T2WI and STIR signal) in affected muscles. Inflamed muscles demonstrate contrast enhancement.

If chronic, T1WI will show high muscle signal indicating fat replacement and atrophy.

ADVERTISEMENT: Supporters see fewer/no ads

Cases and figures

  • Case 1: polymyositis
    Drag here to reorder.
  • Updating… Please wait.

     Unable to process the form. Check for errors and try again.

     Thank you for updating your details.