Aneurysm - is an abnormal local expansion of the blood vessel wall, usually an artery due to a defect, illness or injury. Over time, the pressure inside the aneurysm may cause expansion and even breaking.
There are two types of true intracranial aneurysms: saccular and fusiform (spindle ) .
Common causes of intracranial aneurysms are hemodynamically induced degenerative or vascular injury, atherosclerosis (usually resulting in the formation of fusiform aneurysms), concomitant vasculopathy (eg , fibromuscular dysplasia). Rare causes include trauma and infection.
Congenital anomalies of intracranial vessels such as the fenestration of vertebral - basilar junction or the presence of persistent trigeminal artery are combined with an increased occurrence of saccular aneurysms. Vasculopathy such as fibromuscular dysplasia, connective tissue disease and automatic dissection of arteries are also combined with an increased risk of aneurysm.
Diseases of an increased risk of brain aneurysms:
- multicystic kidney disease
- abnormal blood vessels
- fibromuscular dysplasia
- Connective tissue disorders ( Marfan syndrome , Ehlers - Danlos )
- The presence of vascular malformations and fistulas in other organs
Clinic rupture a brain aneurysm.
Hemorrhage occurs suddenly among full health. There is a sharp headache, "a blow to the head", nausea, repeated vomiting, weakness, loss of consciousness, seizure rarely. Meningeal symptoms appear later. Focal symptoms determined by the localization of the aneurysm and includ oculomotor nerve lesion, hemiparesis or hemiplegia, speech disorders, and mental disorders are possible with lesions of the frontal lobe.
Variants of the course
- apoplectic - acute onset of severe headaches, frequent loss of consciousness, and the development of meningeal syndrome, the development of focal symptoms.
- pseudotumor, with the gradual emergence of this clinic.
Methods of treatment
- Clipping of cerebral aneurysms
- Endovascular embolization of aneurysms and arteriovenous malformations of the blood vessels of the brain and spinal cord
- Creation of extra -intracranial mikroanastamoza