A 35-year-old female was admitted with a 3-year history of headache, gait disturbance and vertigo on & off and one year history of nasal regurgitation. Magnetic resonance imaging demonstrated a large tentorium meningioma left sided and syringomyelia in the upper cervical cord associated with caudal displacement of the cerebellar tonsil (chiari type -1 malformation). Herniation of the cerebellar tonsil and distortion of the brain stem had probably caused disturbance of cerebrospinal fluid flow which combined with obstruction of the spinal canal, caused the syrinx. Complete excision of the tumor resulted in symptomatic improvement of these symptoms with complete resolution of syrinx & chiari.
14. Milhorat TH, Kotzen RM, Anzil AP: Stenosis of central canal of spinal cord in man: Incidence and pathological findings in 232 autopsy cases. J Neurosurg 1994;80: 716-722.
15. Oldfield EH, Muraszko K, Shawker TH, Patronas NJ:Pathophysiology of syringomyelia associated with Chiari I malformation of the cerebellar tonsils. Implications for diagnosis and treatment. J Neurosurg1994; 80:3-15.
16. Urasaki E, Soejima T, Yokota A, Matsuoka S:Association of asymptomatic syringomyelia with tentorial meningioma. No Shinkei Geka1989; 17: 985-989.