Background: Authors analyzed surgical patients with Chiari malformation (CM) associated with cerebellar tonsillar cyst. This association is quite rarely encountered in the literature.
Case Description: We retrospectively reviewed 60 surgical adult patients with MRI evaluation who underwent posterior fossa decompression for treatment of CM type I.
Methods: Data of 100 cerebral angiographies were retrospectively analyzed (p = 0.05).
Results: Mean age was 56.