Carotid Artery Stenting for Symptomatic Internal Carotid Artery Stenosis Associated with Moyamoya Disease.

Surgical intervention in a case of internal carotid artery stenosis with moyamoya vessels has not been well described. We present a case with detailed description of the surgical procedure and perioperative management.A 58-year-old man with symptomatic internal carotid artery stenosis had concurrent moyamoya vessels intracranially. He had motor weakness and numbness in the left upper extremity. Magnetic resonance imaging showed an ischemic lesion in the right frontal lobe and right chronic subdural hematoma. On day 18 after surgery for subdural hematoma, carotid artery stenting was performed under proximal balloon protection and distal filter protection. After carotid artery stenting, systolic blood pressure was maintained at <120 mm Hg. Hyperperfusion syndrome or hemorrhagic complication did not occur. The patient was discharged without any neurologic deficits.In our patient with internal carotid artery stenosis with moyamoya vessels, strict control of blood pressure likely contributed to prevention of hyperperfusion syndrome or hemorrhagic complications.