title: Ultrasound findings of carpal tunnel syndrome in a Hunter syndrome patient.
abstract: BACKGROUND
  Hunter syndrome (mucopolysaccharidosis II) is a rare genetic disorder. Carpal tunnel syndrome (CTS) is a common finding in these patients.
  
  
  METHODS
  We report the ultrasound findings in a 40-year-old Hunter syndrome patient with severe CTS.
  
  
  RESULTS
  Marked abnormalities of the median nerve were present proximal to the carpal tunnel with an unusual area of increased echogenicity between enlarged fascicles separating the area of maximal enlargement and the normal median nerve proximally.
  
  
  CONCLUSIONS
  This case demonstrated unique ultrasound findings in a Hunter syndrome with CTS. Ultrasound also localized the median nerve lesion in the setting of end-stage median neuropathy and nonlocalizing electrophysiology.
authors.affiliation: Neurological Institute, University Hospitals - Case Medical Center, Case Western Reserve University, 11100 Euclid Avenue, Cleveland, OH, 44106-5098, USA.
authors.forename: Ayham M
authors.initials: AM
authors.lastname: Alkhachroum
authors.affiliation: Neurological Institute, University Hospitals - Case Medical Center, Case Western Reserve University, 11100 Euclid Avenue, Cleveland, OH, 44106-5098, USA.
authors.forename: David C
authors.initials: DC
authors.lastname: Preston
mesh_terms: D000328:Adult; D002349:Carpal Tunnel Syndrome / Q000000981:diagnostic imaging* / Q000209:etiology*; D006801:Humans; D008297:Male; D016532:Mucopolysaccharidosis II / Q000150:complications*; D018608:Ultrasonography, Doppler
keywords: Hunter syndrome; carpal tunnel syndrome; median neuropathy; neuromuscular ultrasound