Congenital absence of the internal carotid artery
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View The Radswiki's current disclosuresAt the time the article was last revised Mohamed Saber had no financial relationships to ineligible companies to disclose.
View Mohamed Saber's current disclosures- Congenital hypoplasia of the internal carotid artery
- Congenital aplasia of the internal carotid artery
- Congenital agenesis of the internal carotid artery
- absent ICA
- hypoplastic ICA
Congenital absence of the internal carotid artery (ICA) is a rare anomaly that occurs in less than 0.01% of the population. It encompasses agenesis, aplasia, and hypoplasia 1.
The most common type of collateral flow is through the circle of Willis, through the anterior communicating artery (ACom) and posterior communicating artery (PCom). Less commonly, collateral flow is provided via persistent embryonic vessels or from transcranial collaterals originating from the external carotid artery (ECA) system.
Although many of these cases remain asymptomatic and go undetected, congenital absence of the ICA is associated with cerebral aneurysms. Also, these anomalies have important implications during carotid endarterectomy and transsphenoidal hypophyseal surgery, and in the setting of thromboembolic disease.
Related pathology
References
- 1. Given CA, Huang-hellinger F, Baker MD et-al. Congenital absence of the internal carotid artery: case reports and review of the collateral circulation. AJNR Am J Neuroradiol. 22 (10): 1953-9. AJNR Am J Neuroradiol (full text) - Pubmed citation
- 2. Winter PR, Itinteang T, Leadbitter P, FitzJohn T, Tan ST. PHACE(S) Syndrome With Absent Intracranial Internal Carotid Artery and Anomalous Circle of Willis. (2015) The Journal of craniofacial surgery. 26 (4): e315-7. doi:10.1097/SCS.0000000000001701 - Pubmed
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- Bilateral internal carotid artery agenesis
- Congenital absence of internal carotid artery with pituitary macroadenoma
- Congenital absence of internal carotid artery
- Internal carotid artery agenesis
- Congenital aplasia of the internal carotid artery
- Congenital absence of the internal carotid artery
- Internal carotid artery hypoplasia
- Aplasia of the internal carotid artery
- Internal carotid artery hypoplasia
- Internal carotid artery aplasia/hypoplasia
- Hypoplasia of the internal carotid artery
- Congenital absence of the internal carotid artery
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