Descompresión de la fosa posterior en pacientes con malformación de Chiari I– siringomielia
OBJECTIVE: To show the clinical–surgical results related with two patients with Chiari I malformation and syringomyelia treated in Universitary Hospital “Manuel Ascunce Domenech” (Camaguey, Cuba) with reduced posterior fossa decompression focused mainly in achieving the restitution of normal cerebrospinal flow in the craniospinal union.
 CLINICAL CASES: Two female patients with cervical unilateral pain, accompanied by motors and sensitive dysfunctions in the superior limbs are presented. Cranial and cervical magnetic resonance imaging demonstrated tonsils cerebellar herniation of more than 5 mm toward the spinal canal with cervical syringomyelia. Posterior fossa decompression was carried out in both cases. Clinical and radiological evolution was favorable.
 CONCLUSIONS: In the presented cases, good results have been achieved with the performance of posterior fossa decompression and high cervical laminectomy.