Detection of cervical nerve root hypertrophy by ultrasonography in chronic inflammatory demyelinating polyradiculoneuropathy

Several studies have demonstrated abnormal MRI findings in chronic inflammatory demyelinating polyradiculoneuropathy (CIDP), especially hypertrophy and abnormal enhancement of spinal nerve roots, but there have been few reports on ultrasonographic findings of spinal nerve roots in CIDP. To determine...

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Bibliographic Details
Published in:Journal of the neurological sciences 2004-04, Vol.219 (1), p.15-21
Main Authors: Matsuoka, Naoki, Kohriyama, Tatsuo, Ochi, Kazuhide, Nishitani, Michie, Sueda, Yoshimasa, Mimori, Yasuyo, Nakamura, Shigenobu, Matsumoto, Masayasu
Format: Article
Language:English
Subjects:
Adult
Aged
Biological and medical sciences
Cervical nerve root
Chronic inflammatory demyelinating polyradiculoneuropathy (CIDP)
CSF protein
Female
Humans
Hypertrophy
Magnetic Resonance Imaging
Male
Medical sciences
Middle Aged
MRI
Nerve root hypertrophy
Neurology
Polyradiculoneuropathy, Chronic Inflammatory Demyelinating - diagnostic imaging
Polyradiculoneuropathy, Chronic Inflammatory Demyelinating - pathology
Radiculopathy - diagnostic imaging
Radiculopathy - pathology
Spinal Nerve Roots - diagnostic imaging
Spinal Nerve Roots - pathology
Ultrasonography
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Summary:Several studies have demonstrated abnormal MRI findings in chronic inflammatory demyelinating polyradiculoneuropathy (CIDP), especially hypertrophy and abnormal enhancement of spinal nerve roots, but there have been few reports on ultrasonographic findings of spinal nerve roots in CIDP. To determine whether ultrasonography (US) enables detection of hypertrophy of the cervical nerve roots, how frequently hypertrophy occurs in CIDP, and whether US findings correlate with any clinical and laboratory features, US of cervical nerve roots was performed using a 7.5-MHz linear-array transducer in 13 CIDP patients and 35 control subjects. A coronal oblique plane with a transducer placed on the lateral side of the neck was used to visualize the cervical nerve roots just after their point of exit from the cervical foramina, and their diameters were measured. US demonstrated hypertrophy of the cervical nerve roots in 9 (69%) of the 13 CIDP patients as compared with findings in control subjects. The degree of hypertrophy was significantly associated with the level of CSF protein ( χ 2=5.8, p
ISSN:0022-510X
1878-5883
DOI:10.1016/j.jns.2003.11.011