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Lateral medullary ischaemic events in young adults with hypoplastic vertebral artery
Sotirios Giannopoulos1, Sofia Markoula, Maria Kosmidou
1Department of Neurology, University of Ioannina School of Medicine, University Campus 45110, Ioannina, Greece. sgiannop@uoi.gr
Insights
Hypoplastic vertebral artery (VA) combined with other risk factors can lead to stroke in young adults. This study highlights the importance of considering VA hypoplasia in stroke cases with coexisting risk factors.
Area of Science:
- Neurology
- Vascular Medicine
- Radiology
Background:
- Lateral medullary syndrome, a type of stroke, can affect young adults.
- Vertebral artery (VA) hypoplasia is a common anatomical variant.
- The role of VA hypoplasia as an independent stroke risk factor is debated.
Observation:
- Three young adults presented with symptoms of lateral medullary syndrome.
- All patients had two additional stroke risk factors (atherosclerotic or non-atherosclerotic).
- Magnetic resonance angiography revealed a hypoplastic VA ipsilateral to the stroke in all cases.
Findings:
- CT scans were unremarkable in all patients.
- MRI identified a lateral medullary lesion in only one patient.
- Hypoplastic VA was consistently observed alongside other stroke risk factors.
Implications:
- While VA hypoplasia is often asymptomatic, it may contribute to stroke when combined with other risk factors.
- This case series suggests VA hypoplasia should be considered in young stroke patients with multiple risk factors.
- Further research is needed to clarify the contribution of VA hypoplasia to ischemic events.
Objective:
To present three cases of young adults with lateral medullary ischaemic events associated with a hypoplastic vertebral artery (VA). All three patients had two additional atherosclerotic or non-atherosclerotic risk factors for stroke.
Patients And Methods:
One female, aged 40 years, and two males, aged 38 and 37 years, each with two risk factors for stroke, presented to the emergency department with acute onset of symptoms and findings consistent with lateral medullary syndrome. All three patients underwent emergency CT scan of the brain followed by MRI and magnetic resonance angiography (MRA).
Results:
The CT scans were negative in all patients. MRI revealed a lateral medullary lesion in only one patient. All three patients had a hypoplastic VA ipsilateral to the clinical ischaemic event on MRA.
Conclusions:
Hypoplasia of VA is not considered a risk factor for stroke as it is a common variant in up to 75% of the general population. However, in our patients, hypoplastic VA coexisted with two risk factors and resulted in stroke. Thus although a hypoplastic VA may not be an uncommon asymptomatic finding, it may contribute to stroke if additional risk factors are present.
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