Hereditary neuropathy with liability to pressure palsies: assocation with central nervous system demyelination.
Hereditary neuropathy with liability to pressure palsies (HNPP) is usually caused by a 1.5-Mb deletion in chromosome 17p11.2, the inverse mutation to the duplication seen in the majority of Charcot-Marie-Tooth type 1A (CMT 1A) patients. Although most patients with HNPP present with pressure palsies secondary to mild trauma, the clinical heterogeneity of the neuropathy has become more apparent following the discovery of the mutation. There are reports of central conduction abnormalities in CMT 1, however, there have been no previous reports of central nervous system (CNS) demyelination in HNPP. We report a case of HNPP with the typical DNA mutation whose clinical features and MRI of the brain suggested concurrent CNS demyelination. Further studies of possible CNS involvement in HNPP are warranted.
Amato
A A
AA
Department of Neurology, Wilford Hall Medical Center, Lackland AFB, Texas 78236-5300, USA.
Barohn
R J
RJ
D000328:Adult; D001921:Brain / Q000473:pathology*; D002872:Chromosome Deletion; D002874:Chromosome Mapping; D002883:Chromosomes, Human, Pair 14; D015417:Hereditary Sensory and Motor Neuropathy / Q000235:genetics / Q000473:pathology* / Q000503:physiopathology*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008475:Median Nerve / Q000503:physiopathology; D009431:Neural Conduction; D010543:Peroneal Nerve / Q000503:physiopathology; D011826:Radial Nerve / Q000503:physiopathology; D013497:Sural Nerve / Q000473:pathology / Q000503:physiopathology; D013979:Tibial Nerve / Q000503:physiopathology; D014459:Ulnar Nerve / Q000503:physiopathology