Abstract Number ‐ 220: Internal Carotid Artery Hypoplasia of Unique Anatomical Variance

• DOI: 10.1161/svin.03.suppl_1.220
• Publication Date: 2023-04-25T07:32:42Z
• Authors: Noor A Mahmoud; Ola Alshaqi; Nyle C Almeida; Benjamin Cornwell; Ahmad Alawwad
• Keywords: Circle of Willis; Aplasia; Posterior communicating artery

Introduction Hypoplasia of the internal carotid artery (ICA) is incomplete development ICA with presence empty canal. Despite anecdotal data reporting less than a 0.01% developmental anomalies ICA, true incidence remains unknown. Many cases are asymptomatic and thus escape diagnostic detection or appropriate intervention. In 1968, Lie Hage described collateral circulation in through Circle Willis, persistent embryonic vessels, skull base arteries/anastomosis rete mirabile. While systems exist, subsequent cerebrovascular insufficiency vascular malformations may occur as result. To our knowledge, there an body literature surrounding implications hypoplasia varying anatomy. Methods We present case report left comprehensive review. Results A 70‐year‐old woman hypertension, nicotine dependence, chronic obstructive pulmonary disease (COPD) presented COPD exacerbation disorientation. Computed tomography (CT) head angiography showing cervical/petrous aplasia small The external vertebral originate at aortic arch. Majority blood supply to anterior cerebral (ACA) middle (MCA) suppliedby right communicating (AComA), posterior (PComA). There also supraclinoid terminus that reconstitute predominantly by A1 segment PComA (Figure 1). Conclusions Although be incidental finding, accurate promptrecognition essential for consideration endovascular implications, screening malformations, understanding flow, managing risk, avoiding misinterpretation clinical imaging patterns.