Presentation
Presentation with polyarteritis nodosa. Back and leg pain and weakness.
Patient Data
Age: 15 years
Gender: Male
From the case:
Polyarteritis nodosa - muscle appearances
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Multifocal abnormal areas of T2 high-signal in the paraspinal and lower limb muscles. These tend to be peripheral and associated with a perforating vessel and have a triangular appearance with the apex being central and the base, peripheral.