PMC9053534_01
Coronal T2WI (A and B) of two different patients shows thickening and increased signal intensity in trunks, divisions, chords, and terminal branches of the left brachial plexus (red arrows), suggesting neuritis. Left shoulder sagittal T2WI (C - same patient in B), depicts high signal intensity in the supraspinatus muscle (yellow arrow), due to edema/denervation. S = scapular spine.
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F1
NCS/EMG and NMRI were consistent with Parsonage-Turner syndrome (Figure 1A).
PMC9053534_02
PMC9053534_03
Coronal T2WI (A and B) of two different patients shows thickening and increased signal intensity in trunks, divisions, chords, and terminal branches of the left brachial plexus (red arrows), suggesting neuritis. Left shoulder sagittal T2WI (C - same patient in B), depicts high signal intensity in the supraspinatus muscle (yellow arrow), due to edema/denervation. S = scapular spine.
jbsr-106-1-2757-g1.jpg
PMC9053534_03_jbsr-106-1-2757-g1.jpg
F1
NCS/EMG and NMRI were consistent with Parsonage-Turner syndrome (Figure 1A).
PMC9053534_04
Axial T1WI (A), T2WI with fat suppression (B) and post contrast T1WI (C) show asymmetry of the extra-pelvic sciatic nerves, depicting increased signal intensity in T2WI, thickening and enhancement of the left sciatic nerve (red arrows), suggesting neuritis. Note the normal right sciatic nerve (yellow arrows).
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F2
MRI revealed signs of sciatic neuritis (Figure 2). Mononeuropathy related to COVID-19 was diagnosed.
PMC9053534_05
Coronal T1WI (A) and corresponding coronal T2WI (B) with fat suppression show ulnar nerve thickening and T2WI increased signal intensity at the level and distal to cubital tunnel (red arrows), suggesting ulnar neuropathy. Axial T2WI with fat suppression (C) depicts ulnar nerve thickening and increased signal intensity (red arrow), also as high signal intensity in the flexor carpi ulnaris (yellow arrow) and flexor digitorum profundus (blue arrow) due to edema/denervation. R = radius; U = ulna.
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F3
Elbow MRI was consistent with ulnar neuropathy (Figure 3), attributed to ulnar nerve compression lesion.