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

Nerve enlargement has early been recognized in CIDP and plexus MRI hypertrophy has been reported in typical CIDP cases. Our aim is to determine plexus MRI value in the diagnosis of CIDP with an initial atypical presentation, which, up to now, has not been demonstrated. Retrospective study of 33 consecutive patients suspected of CIDP.

[Traumatic cord and nerve root injuries: imaging features at the acute and chronic phases].

Cord injuries are frequent and severe lesions resulting in significant disability, most frequently in younger subjects. The area of cord injured results in clinical syndromes (Brown-Sequard, motor and/or sensory deficit..

[Imaging of plexopathy].

Recent advances in magnetic resonance imaging (MRI) technology has improved vizualization of the peripheral nerve system, enabling further explorations of plexopathy beyond the physical examination and electrodiagnostic studies. High-resolution MRI is a method of choice, showing diffuse or focal enlargement, hyperintensity on T2-weighted images, altered fascicular patterns, enhancement after gadolinium injection or masses causing infiltration or compression, and signs of muscle denervation. Other techniques are complementary.