Cluster headache. There is no evidence of intracranial hemorrhage or acute infarct. The brain parenchyma and pituitary gland appear unremarkable. There is a pineal gland cyst that measures up to 14 mm. There is no abnormal intracranial enhancement. The ventricles and basal cisterns are normal in size and configuration. There is no midline shift or herniation. The major cerebral flow voids are intact. The orbits, skull, paranasal sinuses, and scalp soft tissues are grossly unremarkable.
1. No evidence of intracranial hemorrhage, herniation, orbital mass, or hydrocephalus. 2. A pineal gland cyst measures up to 14 mm.