Abnormal Circle Of Willis Morphology C4022868
A variation in the structure of arteries that form a circle at the base of the brain. Some people have no symptoms, while others may have increased risk of aneurysm or reduced blood flow to brain regions.
Key facts at a glance
- ICD-10
- I78.0
- ICD-11
- BA00.0
- Body system
- cardiovascular
- Severity
- moderate
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Headaches
Cerebrovascular accident symptoms
Chest discomfort or palpitations
(cardiovascular)Noticeable symptoms that may vary in intensity over time.
Frequency: Common at all stages
Cognitive changes
(cardiovascular)Memory issues
(cardiovascular)Diagnosis and tests
How this condition is diagnosed and what test results mean.
Initial screening tests
Standard diagnostic workup
Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]
Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]
Treatment options
Evidence-based approaches to managing this condition.
First-line treatments
Disease management and monitoring
Treatment options should be discussed with a qualified healthcare provider.
Neurovascular imaging surveillance
Regular MRI/MRA imaging to monitor Circle of Willis anatomy and detect any progressive changes or aneurysm formation that may require intervention.
Blood pressure management
Pharmacological control of hypertension to reduce hemodynamic stress on abnormal vascular structures and prevent aneurysm development or rupture.
Additional treatment options
Cardiovascular risk reduction
Smoking cessation, regular aerobic exercise, and stress management to optimize vascular health and reduce progression of arterial abnormalities.
lifestyleRevascularization procedure
Surgical bypass or reconstructive procedures may be considered for significant hemodynamic compromise or documented ischemia related to the anatomical variant.
surgicalAnti-inflammatory nutrition
Diet rich in omega-3 fatty acids, antioxidants, and low in processed foods to support vascular wall integrity and reduce inflammatory markers.
dietaryWhen to seek medical help
Recognize when you need immediate medical attention.
Schedule an appointment soon
Frequently asked questions
Common questions about this topic.
What is Abnormal Circle Of Willis Morphology C4022868?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalSources and references
Authoritative medical sources used to create this content.
Kumar A, Singh S, Sharma R. Anatomical variations of the Circle of Willis: clinical implications and imaging findings. Neuroradiology. 2022.
American Stroke Association, European Stroke Organisation. Guidelines for the management of cerebrovascular anatomical variants. Stroke. 2021.
Chen W, Rodriguez M, Patel K, Kim J. Prevalence and clinical significance of Circle of Willis hypoplasia in acute ischemic stroke patients. J Cereb Blood Flow Metab. 2020.
Gupta V, Bhatt S, Liu C, Brown N. Circle of Willis variations and stroke risk: a systematic review and meta-analysis. Neurology. 2023.
Medication Comparisons
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View Medication ComparisonsThis information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy