Juvenile dermatomyositis

Discussion:

Juvenile dermatomyositis is a autoimmune inflammatory conditions involving muscles.

The juvenile form has a tendancy to be more severe and is less associated with an underlying malignancy than the adult form.

Auto-antibodies are relatively specific for the condition -- the specific elevated muscle specific antibodies being anti-RNa and anti-Mi2.

This case has the characteristic findings of diffuse high signal throughout affected muscles on T2/TIRM sequences.

 

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