Neuroglial Cyst

Neuroglial cysts are congenital unilocular benign intraparenchymal cysts lined by a glial wall with an epithelial lining. The lining cells produce CSF-like fluid, so these cysts may grow very slowly. They typically present as an incidental finding on imaging obtained for another reason. Over time, they may become symptomatic if they grow large enough to exert mass effect on intracranial structures. When present, symptoms may include headaches or seizures. Depending on the cyst’s location, patients may display cognitive or behavioral changes, neurological deficits such as weakness, sensory loss, visual disturbance, hemiparesis or coordination problems, or hydrocephalus if the enlarging cyst obstructs CSF pathways. In this asymptomatic patient, no surgical intervention is planned.