case_images: PMC3891084_01
case_images: Magnetic resonance imaging (MRI) of the patient's arm. T2-weighted sagittal MRI demonstrating diffuse homogenous signal intensity in the triceps and brachialis muscles.
case_images: kjim-20-346-g001.jpg
case_images: PMC3891084_01_kjim-20-346-g001.jpg
case_images: F1
case_images: Therefore, a magnetic resonance imaging study was performed (Figure 1).
case_images: Photomicrography of the muscle specimen of the left triceps and brachialis shows neutrophilic myositis.
case_images: kjim-20-346-g002.jpg
case_images: PMC3891084_01_kjim-20-346-g002.jpg
case_images: F2
case_images: These histological specimens showed severe myositis, with predominantly dense infiltration of mature neutrophils, associated disruption of the muscle architecture and tissue necrosis (Figure 2).