Arnold Chiari is a congenitally developed malformation. Syringomyelia is accompanied in some of the cases. Four types of malformation have been identified and type I is frequent in adults. Cerebellar tonsils are displaced downward from the foramen magnum in this type. In order to prevent tonsillar herniation, anesthesist should avoid central blocks and increasing intracranial pressure in the management of anesthesia. We aimed to rewiew the management of anesthesia in a patient with decompressioned Arnold Chiari type I malformation accompanied with siringomiyelia undergone to ureteral dilatation.
Syringomyelia, Arnold Chiari malformation, general anesthesia, ureteral dilatation