2020 Volume 42 Issue 2 Pages 84-88
An 86-year-old woman was admitted to the hospital because of disturbed consciousness and aphasia 8th day after carotid artery stenting for left severe internal carotid artery stenosis. Head MRI showed high signal intensity in the left temporooccipital cerebral cortex and 123I-IMP SPECT showed severe hyperperfusion in the same area. She was diagnosed delayed hyperperfusion syndrome (HPS), and she was treated with strict blood pressure control. Disturbed consciousness of the patient gradually improved, although persistent right hemiplegia and mild aphasia remained in the chronic state. Delayed HPS is rare after carotid artery stenting (CAS) however, we should take account of this complication.
