title: Chronic multifocal neuropathy with persistent conduction block (Lewis-Sumner syndrome). A clinico-morphologic study of two further cases with review of the literature.
abstract: We present data of 2 patients suffering from chronic motor-sensory multifocal neuropathy with persistent conduction block. The first case concerns a 9-year follow-up of a female, aged 24 years at onset with persistent multiple conduction blocks and a tendency towards generalization of clinical deficits. Eight years after onset sural nerve biopsy revealed extreme interfascicular variations of de/remyelination, onion bulb formation, fiber loss, edema, and proliferation of basal lamina of endoneurial capillaries. Serum antibodies against GM1 gangliosides were not detected. The second case, a 29-year-old Yemenitic male with a 5-year history, exhibited conduction blocks in motor and sensory fibers, and a normal sural nerve biopsy. Our results are discussed with respect to those of some 30 cases individually reported in the literature.
authors.affiliation: Klinik und Poliklinik für Neurologie und Psychiatrie, Universität zu Köln/Neurologie, Germany.
authors.forename: E
authors.initials: E
authors.lastname: Gibbels
authors.forename: F
authors.initials: F
authors.lastname: Behse
authors.forename: M
authors.initials: M
authors.lastname: Kentenich
authors.forename: W F
authors.initials: WF
authors.lastname: Haupt
mesh_terms: D000328:Adult; D003711:Demyelinating Diseases / Q000473:pathology / Q000503:physiopathology*; D005260:Female; D006801:Humans; D008297:Male; D009431:Neural Conduction; D010523:Peripheral Nervous System Diseases / Q000473:pathology / Q000503:physiopathology*; D013497:Sural Nerve / Q000473:pathology / Q000503:physiopathology; D013577:Syndrome