In fact, intracranial aneurysm is not a tumor as we usually say, it just refers to the bulge in the wall of intracranial arterial blood vessels, which is a thin wall consisting of outer and middle membranes, and is called intracranial aneurysm because of its general shape of protruding like a balloon, somewhat similar to the appearance of a tumor. Why do you have a brain aneurysm? Why did it break? Will it break again? A brain aneurysm is like a balloon blown up on the wall of cerebral blood vessel, which may rupture at any time. When the blood pressure suddenly increases due to the triggering factors such as mental tension, emotional excitement, exertion, violent head swing, Mongolian bending, urgent getting up, drinking, forceful defecation, lifting heavy objects, going upstairs, sexual life, etc., it may easily cause rupture and bleeding, which may threaten the patient’s life. According to statistics, the mortality rate of cerebral aneurysm after the 1st rupture is 30%. Therefore, cerebral aneurysm is like an unscheduled bomb buried in human brain, which is in danger of explosion at any time. According to statistics, 40-50% of the patients will have the second rupture within one month after the rupture, and the mortality rate is about 70% after the second rupture and 100% after the third rupture. What are the early signs of cerebral aneurysm? What are the characteristics of the patient’s headache? The most common symptom is a sudden, severe headache caused by a small amount of blood leaking from the aneurysm, as if the head is being hit by a stick, followed by symptoms such as drooping eyelids, inability to open one eye, double vision, partial blindness, loss of vision, and facial pain due to the enlargement of the aneurysm and compression of the adjacent nerve tissue. Secondly, the aneurysm may cause symptoms such as drooping eyelids, inability to open one eye, double vision, partial blindness, loss of vision and facial pain. In addition, there are also symptoms of ischemia due to vasospasm, such as dizziness. The best way to reduce mortality and disability is to treat brain aneurysms before they bleed. How to treat intracranial aneurysm? The fundamental aim of treatment is to prevent the aneurysm from rupture and bleeding again. Surgery is performed as early as possible, which minimizes the risk of rebleeding and reduces the risk of postoperative cerebral vasospasm with cerebral infarction, as well as the risk of secondary systemic complications. There are two treatment methods: one is craniotomy to clip the aneurysm, i.e., using a special aneurysm clip to clip the neck of the aneurysm and protect the patency of the aneurysm-carrying artery; the other is interventional therapy, i.e., endovascular embolization technique, which involves piercing a small opening with a needle at the root of the thigh, inserting a microcatheter and a guidewire into the brain aneurysm, and gradually filling the aneurysm cavity by feeding a microspring coil through the microcatheter until the aneurysm is completely occluded to achieve The cure is achieved by gradually filling the aneurysm cavity with a microspring coil delivered through the microcatheter until it is completely occluded.