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Nerve ultrasound in a case of multifocal motor neuropathy without conduction block
Author(s) -
Pitarokoili Kalliopi,
Gold Ralf,
Yoon MinSuk
Publication year - 2015
Publication title -
muscle and nerve
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.025
H-Index - 145
eISSN - 1097-4598
pISSN - 0148-639X
DOI - 10.1002/mus.24583
Subject(s) - multifocal motor neuropathy , medicine , mismatch negativity , denervation , motor nerve , ultrasonography , magnetic resonance neurography , ultrasound , nerve conduction study , peripheral neuropathy , nerve conduction , median nerve , electromyography , magnetic resonance imaging , anatomy , radiology , surgery , physical medicine and rehabilitation , electroencephalography , psychiatry , diabetes mellitus , endocrinology
: Multifocal nerve enlargements and ultrastructural changes either corresponding or not to sites of existing conduction blocks have been described in demyelinating polyneuropathies using multiple imaging techniques. Methods : Using the emerging technique of peripheral nerve ultrasonography we investigated the peripheral nerves of a patient with multifocal motor neuropathy (MMN) without conduction block. Results : In this case of MMN without conduction blocks we found multifocal nerve enlargements in the ultrasonography and electrodiagnostic signs of acute and chronic denervation associated with positive anti‐GM1 IgM antibodies. Conclusions : This case shows that nerve ultrasound can be a complementary tool for diagnosing multifocal motor neuropathy without typical electrodiagnostic features. Muscle Nerve 52 : 294–299, 2015