Multiple Sites Ultrasonography of Peripheral Nerves in Differentiating Charcot-Marie-Tooth Type 1A from Chronic Inflammatory Demyelinating Polyradiculoneuropathy

Frontiers in Neurology
Jingwen NiuMingsheng Liu

Abstract

Multiple sites measurement of cross-sectional areas (CSA) by ultrasound was performed to differentiate Charcot-Marie-Tooth type 1A (CMT1A) and chronic inflammatory demyelinating polyradiculoneuropathy (CIDP). Nine patients with CMT1A, 28 patients with CIDP, and 14 healthy controls (HC) were recruited prospectively. Consecutive ultrasonography scanning was performed from wrist to axilla on median and ulnar nerves. CSAs were measured at 10 predetermined sites of each nerve. CMT1A had significantly larger CSAs at all sites of median and ulnar nerves (p < 0.01). In CMT1A, CSAs increased gradually and homogeneously from distal to proximal along the nerve, except potential entrapment sites. CIDP displayed three different morphological patterns, including mild enlargement in 15 patients, prominent segmental enlargement in 12, and slight enlargement in 1, among which different treatment responses were observed. All patients with mild nerve enlargement treated with intravenous immunoglobulin were responsive (7/7), while less than half of those with prominent segmental enlargement (3/7) were responsive (p < 0.01). Consecutive scan along the nerve and multiple sites measurement by ultrasound could supply more detailed morphological featur...Continue Reading

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Citations

Oct 28, 2019·Frontiers in Neurology·Yi LiMingsheng Liu
Aug 4, 2020·World Journal of Radiology·Antonia S Carroll, Neil G Simon
Feb 26, 2021·Muscle & Nerve·Dev NathaniMatthew C Kiernan
Feb 20, 2021·Muscle & Nerve·Qingyun DingLiying Cui

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