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¹SSK Göztepe Hastanesi Nöroşirürji Kliniği, İstanbul
²SSK Göztepe Hastanesi Nöroloji Kliniği, İstanbul In this study, 21 patients with cavitary lesions the spinal cord are presented. 17 patients underwent surgical treatment for progressive symptoms. One patient with hydrocephalus was t.reated with a ventriculoperitoneal shunt. Two approaches were used in the treatment of syrinxes occurring with Arnold-Chiari malformations: l. Posterior fossa decompression improved(4 cases), 2. shunting from the syrinx to the pleura if brainstem evoked potentials of the patient was normal(2 cases). Syrinxes associated with intramedullary masses were managed by excision the causal lesion. Patients with terminal syringomyelia cavities and tethered spinal cords were treated by laminectomy and realese of the tethered cord followed by either classiral terminal ventriculostomy(4 cases). The other patient was treated effectively by a syringopleural shunt. There were two rerurrent syrinxes an avarege follow up 2,5 years. The results of surgery for other rases were satisfactory. Anahtar Kelimeler : Craniovertebral Decompression, Magnetic Resonance Imaging(Mr), Syringomyelia, Syringopleural Shunt