- Brain Aneurysm ?
Aneurysm is a ballooning that occurs as a result of the weakening of the artery wall in the brain and is often seen in the bifurcation areas of the vessels. This ballooned structure is more flimsy than a normal vein, and under some conditions it may rupture and cause bleeding into the brain, endangering life. Aneurysms may be due to congenital vascular maldevelopment, or they may develop after high blood pressure, arteriosclerosis (atherosclerosis), infections (inflammation of the vessel) or head trauma. Aneurysms are usually located at the base of the brain and cause bleeding in the cerebrospinal fluid there. The annual bleeding risk of aneurysms is approximately 1%.
- Aneurysm Types
Saccular (sac-shaped) aneurysms: It is the most common type of aneurysm and occurs in the bifurcation areas of large vessels at the base of the brain. At these bifurcation points, the vessel wall is exposed to more pressure. This constant pressure may cause ballooning over time as a result of damage to the vessel wall. Saccular aneurysms develop over years, and therefore the risk of aneurysm rupture increases with age. We can compare this development of an aneurysm to the ballooning seen in the inner tubes used in vehicles in the past. Another important reason for the formation of aneurysms is the loss of elasticity of the vessel wall as a result of the deterioration of the vascular structure in older ages.
Fusiform (spindle-shaped) aneurysms: This aneurysm is a spindle-shaped expansion that includes a long section of the vessel. is seen as . These types of aneurysms may rupture and bleed, expand excessively and cause pressure on the surrounding brain tissue, or cause stroke-like complaints when clotting develops and debris that can be separated from it causes blockage (embolism) in normal brain vessels.
Mycotic aneurysms (developing as a result of inflammation): They are rare and develop as a result of microbial disease of the vessel. They are generally sac-shaped. Inflammation causes damage to the vessel wall, thus increasing the risk of aneurysm formation and rupture as a result of wall weakening. Often subacute It is a complication of terial endocarditis (known as 'heart rheumatism' in our society).
Traumatic (accidental) aneurysms: Aneurysm that develops after an accident in the blood vessels of the brain. is the type. The damaged vessel wall in the trauma area becomes weak and may subsequently rupture.
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