case_images: PMC6710791_01
case_images: Magnetic resonance imaging (MRI) showed a lobulated multiseptated lesion seen within left supinator muscle as delineated by the red arrows, which showed a hyperintense signal on T2-weighted images (T2WI) (b, e) and hypointense on T1-weighted images (T1WI) (a, d), with peripheral enhancement post contrast (c).
case_images: CRIOR2019-5156032.001.jpg
case_images: PMC6710791_01_CRIOR2019-5156032.001.jpg
case_images: fig1
case_images: T2-weighted images (T2WI) and hypointense on T1-weighted images (T1WI), with peripheral enhancement post contrast (Figures 1(a)-1(e)). The PIN was reported as being encased/impinged by the tumor.
case_images: Intraoperative photograph showed the left supinator intramuscular myxoma encasing the posterior interosseous nerve (PIN). The course of the PIN had been changed to near horizontal as drawn by the yellow line due to encasement.
case_images: CRIOR2019-5156032.002.jpg
case_images: PMC6710791_01_CRIOR2019-5156032.002.jpg
case_images: fig2
case_images: The PIN was encased by the tumor (Figure 2).