Carotid web and ischemic stroke: a CT angiography study.
Yang Yu1, Baozhen Wang2, Shugang Zheng1
1Medical Imaging Center, Cangzhou People's Hospital, Cangzhou 061000, China.
Clinical Imaging
|June 13, 2020
Summary
Carotid web (CaW) is found in 2.2% of ischemic stroke patients. This imaging study shows CaW is strongly linked to cryptogenic stroke, especially in younger women.
Area of Science:
- Neurology
- Radiology
- Vascular Medicine
Background:
- Carotid web (CaW) is an uncommon cause of ischemic stroke.
- Understanding CaW prevalence and associations is crucial for stroke management.
Purpose of the Study:
- To determine the prevalence, demographics, and imaging features of Carotid web (CaW) on CT angiography (CTA).
- To explore the association between CaW and cryptogenic stroke versus non-cryptogenic stroke.
Main Methods:
- Retrospective review of 1662 ischemic stroke patients with neck CTA.
- Independent evaluation of CTA scans by two radiologists for CaW presence.
- Clinical workup to differentiate cryptogenic from non-cryptogenic stroke.
Main Results:
- CaW prevalence was 2.2% (33/1489) in ischemic stroke patients.
- CaW was ipsilateral to the stroke in 78.8% of cases.
- Cryptogenic stroke patients had a 10.1-fold higher odds of ipsilateral CaW (6.3% vs 0.7%).
- Ipsilateral CaW was more common in younger women with cryptogenic stroke.
Conclusions:
- CT angiography (CTA) is effective for detecting Carotid web (CaW).
- A strong association exists between CaW and cryptogenic stroke in an Asian population.
- CaW should be considered in the etiological workup of cryptogenic stroke.
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