“…Acquired porencephalic cyst occurs because of infarction, trauma, hemorrhage, and other idiopathic causes. 2 Porencephalic cyst is often associated with various neurologic signs, including visual-field defects, abnormal pupillary responses, decreased vision, nystagmus, strabismus, seizures, and CSF otorrhoea or rhinorrhoea. 3 Here we report a rare presentation of CSF rhinorrhea with porencephalic cyst which occured four years following head injury.…”