Lint: dark-white-matter-sign

"The dark white matter sign is associated with a variety of conditions that cause clinical or subclinical seizures. They include mass lesions (e.g. subdural haematoma, meningioma), non-ketotic hyperglycaemic hyperosmolar state (see non-ketotic hyperglycaemic seizure), encephalitis (e.g. MOGAD), meningitis, leptomeningeal metastases, and moyamoya disease ^1,2,4,5. A similar appearance has also been described in spontaneous intracranial hypotension, although it is unclear if this represents the same phenomenon or another distinct cause of lowered T2 signal within the white matter ³."