title: Syringomyelia after removal of benign spinal extramedullary neoplasms.
abstract: METHODS
  This is a case report.
  
  
  OBJECTIVE
  Two patients with noncommunicating syringomyelia manifesting symptoms years after the uneventful excision of a benign intradural extramedullary neoplasms are presented.
  
  
  BACKGROUND
  The association of noncommunicating syringomyelia with benign extramedullary neoplasms as a coexistent or delayed process is a rare event. The pathogenesis of such spinal cord cavitation after tumor removal and the relationship with therapeutic intervention is not well defined.
  
  
  METHODS
  The delayed occurrence of neurologic impairment emphasizes the need for considering development of syringomyelia rather than tumor recurrence.
  
  
  RESULTS
  The effects of chronic spinal cord compression in the thoracic region may be accelerated by adverse stresses acting on the spinal cord associated with tethering of the spinal cord.
  
  
  CONCLUSIONS
  In defining the pathogenesis of this form of spinal cord cavitation, these cases suggest that therapeutic approaches directed at resolving the process should not only include lyses of adhesions, but shunting procedures, which appear to be most efficacious when these procedures are performed at or cephalad to the level of original tumor removal.
authors.affiliation: Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, USA.
authors.forename: J F
authors.initials: JF
authors.lastname: Cusick
authors.forename: R
authors.initials: R
authors.lastname: Bernardi
mesh_terms: D000368:Aged; D005260:Female; D006801:Humans; D008875:Middle Aged; D011183:Postoperative Complications / Q000175:diagnosis; D013120:Spinal Cord Neoplasms / Q000150:complications / Q000175:diagnosis / Q000601:surgery*; D013595:Syringomyelia / Q000175:diagnosis / Q000209:etiology*