Abstract
Crossed cerebellar diaschisis (CCD) often occurs after ischemic or hemorrhagic stroke that does great damage to the cortico-ponto-cerebellar pathway (CPCP). Nevertheless, as far as we know, CCD due to cerebral hyperperfusion syndrome (CHS) following carotid artery stenting (CAS) is rare. We report a case where CCD and new cerebral infarction after CHS following CAS was effectively treated by intravenous use of edaravone and mannitol. The patient was a 74-year-old female. She developed dizziness and vomiting accompanied with weakness of the right limb for 8 days and was admitted to our hospital. Computed tomography angiography scan revealed severe stenosis at the beginning of the left internal carotid artery. Further digital subtraction angiography (DSA) revealed severe stenosis at the beginning of the left internal carotid artery, with a stenosis rate of approximately 90%. Therefore, she underwent left CAS implantation. After the operation, the patient developed disturbance of consciousness and decreased muscle strength in the right limb. Intravenous infusion of edaravone and mannitol were then started. After 10 days of medical treatment, the condition of patient improved to mild hemiparesis. The findings in this present case strongly suggest that CHS after CAS for carotid artery stenosis may cause transient CCD.
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