PMC10313350_01
(A) Initial findings from ultrasonography (USG). Transverse (Aa) and longitudinal (Ab) view of the left ulnar nerve at the supraepicondylar region. (B) Control USG, 60 days later. Transverse (Ba) and longitudinal (Bb) view of the same nerve at the supraepicondylar region.
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F1
NCS was repeated within 3 months after the start of corticosteroid therapy and an improvement in electrophysiological values was observed (Table 1). NMUS showed an improvement in echogenicity and fascicular disarray, a 50% reduction in the cross-sectional diameter at the two levels described above, and no flow in the Power Doppler (Figure 1).
PMC10313350_02
Right median nerve on the initial USG examination when median neuritis was diagnosed. Transverse (A, B) and (C) longitudinal nerve view in the carpal region. Presence of flow in the Power Doppler (B).
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F2
USG revealed thickening of the median nerve from the level of the middle third of the pronator quadratus muscle up to the main branch of the palmar terminal branches, with a cross-sectional area 2 cm from the carpal tunnel of 32 mm2 and 18 mm2 at the carpal tunnel (RV: 9 mm2), and Power Doppler flow detectable in the carpal region (Figure 2).