title: Optic-spinal inflammatory demyelinating disease: (OS-IDD) patients in Siriraj Hospital.
abstract: OBJECTIVE
  To study the demographic data of optico-spinal inflammatory demyelinating disease (OS-IDD) patients at Siriraj Hospital between January 1997 and October 2006.
  
  
  METHODS
  Retrospective study of OS-IDD patients.
  
  
  RESULTS
  There were 84 OS-IDD patients. Cerebrospinal fluid analysis revealed higher white blood cell count and neutrophilia in neuromyelitis optica (NMO) patients than those of multiple sclerosis (MS) patients. NMO had an average length of 4.1 segments of the cervical and 6.5 segments of thoracic cord involvement.
  
  
  CONCLUSIONS
  Among Thai OS-IDD patients, on the basis of clinical features, NMO was hardly differentiated from MS.
authors.affiliation: Neurology Division, Department of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand.
authors.forename: Songkram
authors.initials: S
authors.lastname: Chotik-anuchit
authors.forename: Sasitorn
authors.initials: S
authors.lastname: Siritho
authors.forename: Siri-On
authors.initials: SO
authors.lastname: Tritrakarn
authors.forename: Orasa
authors.initials: O
authors.lastname: Chawalprit
authors.forename: Naraporn
authors.initials: N
authors.lastname: Prayoonwiwat
mesh_terms: D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D000368:Aged; D005260:Female; D006785:Hospitals, University; D006801:Humans; D007249:Inflammation; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009103:Multiple Sclerosis / Q000134:cerebrospinal fluid / Q000175:diagnosis*; D009471:Neuromyelitis Optica / Q000134:cerebrospinal fluid / Q000175:diagnosis*; D012189:Retrospective Studies; D017678:Sex Distribution; D013116:Spinal Cord / Q000473:pathology; D055815:Young Adult