====== Cerebrovascular atherosclerotic stenosis ======

The frequent occurrence of [[calcification]] in intracranial artery stenosis increases the risk of ischemic stroke
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Cerebrovascular atherosclerotic [[stenosis]] (CAS) and [[intracranial aneurysm]] (IA) have a common underlying arterial pathology and common [[risk factor]]s, but the clinical significance of CAS in IA [[rupture]] (IAR) is unclear. A study of Feng et al. aimed to investigate the effect of CAS on the risk of IAR.

They observed substantial differences in the severity of atherosclerotic stenosis, parent-artery stenosis, number of stenotic arteries, and intracranial/extracranial stenosis as indicators between ruptured and unruptured aneurysms. CAS is significantly associated with the risk of [[intracranial aneurysm rupture]], whether in patients aged ≥65 years or <65 years. These findings indicate the clinical significance of CAS in IAR
((Feng X, Qi P, Wang L, Lu J, Wang HF, Wang J, Hu S, Wang D. Relationship
between cerebrovascular atherosclerotic stenosis and rupture risk of unruptured
intracranial aneurysm: A single-center retrospective study. Clin Neurol
Neurosurg. 2019 Oct 1;186:105543. doi: 10.1016/j.clineuro.2019.105543. [Epub
ahead of print] PubMed PMID: 31627063.
)).
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[[Basilar artery stenosis]].

[[Carotid artery stenosis]]