Presentation
Repeated drop attacks.
Patient Data
Age: 65 years
Gender: Female
From the case:
Persistent hypoglossal artery
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Persistent left embryonal artery entering the skull through the hypoglossal foramen. Hypoplastic vertebral arteries. Calcified plaque in the left ICA.
Case Discussion
Among the four persistent primitive anastomoses between the carotid and basilar system, the hypoglossal artery is the one most likely to cause clinical symptoms.