Pain in the head due to tortuous basilar artery; report of two cases.
D001488:Basilar Artery; D001921:Brain / Q000098:blood supply*; D002319:Cardiovascular System; D006257:Head; D006261:Headache / Q000209:etiology*; D006801:Humans; D010146:Pain
BRAIN/blood supply; HEADACHE/etiology and pathogenesis