title: [Chiari I malformation: postsurgical evolution after 2 years. Report of ten cases].
abstract: OBJECTIVE To describe the clinical and radiological evolution of ten patients with Chiari I malformation (CIM), treated surgically.
  
  
  METHODS
  Ten patients with Chiari I malformation underwent suboccipital craniectomy, laminectomy of C1 and dural patch grafting. All of them were followed for at least two years. A magnetic resonance imaging was performed 6 months after surgery. Clinical preoperative evolution and time of installation, results of MRI and clinical postoperative evolution were correlated.
  
  
  RESULTS
  In postoperative clinical evolution, we noted an important improvement in sensitive function, decrease of the syringohydromielia and partial improvement of cerebellar functions. Improvement of the motor alteration was less marked. During the two years after treatment the muscular atrophy did not change.
  
  
  CONCLUSIONS
  Chiari I malformation is a congenital disease with many clinical manifestations which usually increase with time. A suitable diagnostic studies as well as an appropriate treatment are needed to improve the neurological results.
authors.affiliation: Departamento de Neurocirugía, Hospital de Especialidades Centro Médico Nacional La Raza IMSS, Mexico. azbtlo@hotmail.com
authors.forename: L
authors.initials: L
authors.lastname: Alvarez-Betancourt
authors.forename: J A
authors.initials: JA
authors.lastname: García-Rentaría
authors.forename: S J
authors.initials: SJ
authors.lastname: López-Ortega
authors.forename: A
authors.initials: A
authors.lastname: Caldera-Duarte
mesh_terms: D000328:Adult; D001139:Arnold-Chiari Malformation / Q000473:pathology / Q000601:surgery*; D001284:Atrophy / Q000473:pathology; D001921:Brain / Q000473:pathology; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D018482:Muscle, Skeletal / Q000473:pathology; D019635:Neurosurgical Procedures; D011184:Postoperative Period; D012008:Recurrence; D012720:Severity of Illness Index; D013118:Spinal Cord Diseases; D013595:Syringomyelia / Q000473:pathology / Q000601:surgery