case_images: PMC6681075_01
case_images: PMC6681075_02
case_images: The quadriceps femoris muscle of the right thigh showing focal atrophies (arrows) of the vastus lateralis and medialis.
case_images: IMCRJ-12-243-g0001.jpg
case_images: PMC6681075_02_IMCRJ-12-243-g0001.jpg
case_images: F0001
case_images: The physical examination showed weakness in the right quadriceps and psoas muscles (3/5 using the Medical Research Council scale), conspicuous atrophy of the vastus medialis and lateralis muscles (Figure 1), an absent knee muscle stretch reflex, and hypoalgesia over the anterior aspect of the thigh and medial aspect of the leg.