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Fig. 4. An example of myositis in the chest wall after the proton beam therapy (PBT) for primary hepatocellular carcinoma (HCC). A 62-year-old male patient with HCC in right lobe (A) received pencil-beam scanning PBT with 6,000 cGyRBE in 10 fractions (B). He performed magnetic resonance imaging (MRI) scan due to the right anterior chest wall pain, about 8 months after the completion of the PBT. In the T2-weighted MRI, there was high signal intensity at the right anterior chest wall (white arrows) which had been irradiated during the PBT (C). After administration of oral steroid, the symptom was subsided.
Int J Gastrointest Interv 2021;10:175~182 https://doi.org/10.18528/ijgii210043
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