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Cerebral infarction associated with accessory middle cerebral arteries: two case reports
Yu Hiramatsu1, Masayuki Wakita, Hideki Matsuoka
1Department of Neurology, National Hospital Organization Kagoshima Medical Center, Japan.
Accessory middle cerebral arteries (AMCAs) are rare variants that can cause cerebral infarction in the middle cerebral artery (MCA) territory. Recognizing AMCAs is crucial for diagnosing MCA ischemic stroke, particularly in the hyperacute phase.
Area of Science:
- Neuroscience
- Vascular Neurology
- Radiology
Background:
- The middle cerebral artery (MCA) is a common site for ischemic stroke.
- An accessory middle cerebral artery (AMCA) is a rare anatomical variant originating from the anterior cerebral artery.
Observation:
- Two cases of cerebral infarction in the MCA territory associated with an AMCA are presented.
- In one case, infarction resulted from MCA main trunk occlusion; in the other, AMCA occlusion caused the stroke.
Findings:
- Cerebral infarction can occur due to occlusion of either the main MCA trunk or an associated AMCA.
- The presence of an AMCA can complicate the diagnosis of MCA ischemic stroke.
Implications:
- Radiologists and neurologists must consider AMCA in the differential diagnosis of MCA ischemic stroke.
- Early recognition of AMCA is vital for timely and appropriate hyperacute stroke management.
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