Fig. 1:<unk> of the suprasellar segment of the left internal carotid artery with compression of the optic chiasm Most commonly affected are the vertebral and basilar arteries (Vertebral Basilar<unk> or Vertebrobasillar<unk> . The internal carotid artery may also be affected. Patients with Autosomal Dominant Polycystic Kidney Disease (ADPKD) are more likely to be subject to<unk> .<unk>  are most common in elderly males. In cases involving the basilar artery (VBD), pathology can occur due to direct compression of cranial nerves, by ischemia related to the dolichoectatic vessel, or by the development of hydrocephalus. Rupture of the dolichoectatic vessel can lead to catastrophic intracerebral hemorrhage. Internal carotid artery<unk> is particularly interesting because the artery normally already contains one hairpin turn. Seen in an MRI as two individual arteries at this hairpin, a carotid artery<unk> can progress so far as to produce a second hairpin turn and appear as three individual arteries on an MRI. In the case of a<unk> of the Internal Carotid Artery (ICD), the pathogenesis is primarily related to compression of the optic nerves at the optic chiasma (see Fig. 1 and 2).
Intracranial dolichoectasias
Vein of Galen aneurysmal malformations
Chiari malformation
Porencephaly
Periventricular leukomalacia
Hydrocephalus
Cavernous venous malformation
Intraventricular hemorrhage