Lesión como malformación de Chiari secundaria a quiste aracnoidal de la cisterna cuadrigémina

Abstract

We report a rare case of a 31-year-old woman with headache and pain manifested by cervicalgia that worsened with the Valsalva
maneuver and dizziness, who was found to have a Chiari malformation secondary to a posterior fossa arachnoid cyst. After magnetic resonance imagining (MRI), the patient was submitted to foramen magnum decompression and arachnoid cyst removal that were followed by resolution of both the Chiari malformation and the cyst. The symptoms disappeared after surgery and have remained completely resolved to the present day. In adult patients who present with signs and symptoms of Chiari malformation due to direct medulla compression by the tonsils, a quadrigeminal cistern arachnoid cyst is a rare associated pathology that can be treated surgically.