PMC3891084_01
Magnetic resonance imaging (MRI) of the patient's arm. T2-weighted sagittal MRI demonstrating diffuse homogenous signal intensity in the triceps and brachialis muscles.
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F1
Therefore, a magnetic resonance imaging study was performed (Figure 1).
Photomicrography of the muscle specimen of the left triceps and brachialis shows neutrophilic myositis.
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F2
These histological specimens showed severe myositis, with predominantly dense infiltration of mature neutrophils, associated disruption of the muscle architecture and tissue necrosis (Figure 2).