title: Ultrasonography of MADSAM neuropathy: focal nerve enlargements at sites of existing and resolved conduction blocks.
abstract: Using the emerging technique of peripheral nerve ultrasonography, multiple focal nerve swellings corresponding to sites of existing conduction blocks have been described in demyelinating polyneuropathies. We report two cases of multifocal acquired demyelinating sensory and motor neuropathy (MADSAM). In the first, multiple focal nerve enlargements were detected by ultrasound at sites of previous conduction blocks, well after complete clinical and electrophysiological resolution. In the second case, existing proximal conduction blocks could be localized by ultrasound. Our cases highlight the importance of nerve ultrasound in identifying conduction blocks and demonstrate that ultrasonographic morphological changes may outlast functional recovery in demyelinating neuropathies.
authors.affiliation: Dept. of Neurology, Semmelweis University, Budapest, Hungary. erika.scheidl@gmail.com
authors.forename: Erika
authors.initials: E
authors.lastname: Scheidl
authors.forename: Josef
authors.initials: J
authors.lastname: Böhm
authors.forename: Magdolna
authors.initials: M
authors.lastname: Simó
authors.forename: Csilla
authors.initials: C
authors.lastname: Rózsa
authors.forename: Benjamin
authors.initials: B
authors.lastname: Bereznai
authors.forename: Tibor
authors.initials: T
authors.lastname: Kovács
authors.forename: Zsuzsanna
authors.initials: Z
authors.lastname: Arányi
mesh_terms: D000328:Adult; D003711:Demyelinating Diseases / Q000150:complications / Q000473:pathology*; D004558:Electric Stimulation; D005154:Facial Nerve / Q000000981:diagnostic imaging* / Q000503:physiopathology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009431:Neural Conduction / Q000502:physiology*; D011115:Polyneuropathies / Q000150:complications / Q000473:pathology*; D014463:Ultrasonography