Contribution of plexus MRI in the diagnosis of atypical chronic inflammatory demyelinating polyneuropathies

A comparative study of brachial plexus sonography and magnetic resonance imaging in chronic inflammatory demyelinating neuropathy and multifocal motor neuropathy

“…In contrast to some previous studies that included patients with longer disease duration , we found no gadolinium contrast enhancement. This is in agreement with more recent reports that noted its limited sensitivity in CIDP . In contrast, albuminocytologic dissociation was a frequent finding and may be a more sensitive marker that indicates blood–nerve barrier dysfunction.…”

Nerve ultrasound in polyneuropathies

“…40,42 MRI is required to detect the enlargement in the lumbosacral plexus and very proximal sciatic nerve. [43][44][45][46] In addition to enlargement, nerves in CIDP can have increased vascularization, increased echogenicity, and fascicular enlargement or loss of the normal fascicular appearance. 10,34 In contrast, patients with axonal polyneuropathies usually show no or only minimal nerve enlargement outside of common sites of entrapment.…”

“…Ultrasound evaluation of the lower extremity is less informative than evaluation of the upper limb in CIDP . MRI is required to detect the enlargement in the lumbosacral plexus and very proximal sciatic nerve . In addition to enlargement, nerves in CIDP can have increased vascularization, increased echogenicity, and fascicular enlargement or loss of the normal fascicular appearance .…”

Demyelinating neuropathy in a 6‐year‐old girl with autism spectrum disorder

“…These findings were improved by IVIG. In CIDP, including MADSAM, hyperintensity with or without hypertrophy of the cervical spinal roots and/or brachial plexus appears on the affected side . Details of MRI abnormalities in MMN, however, are currently insufficient for reliable MRI‐based diagnosis .…”