Emergency Superficial Temporal Artery-Superior Cerebellar Artery Bypass for the Refractory Vertebrobasilar Insufficiency with Partial Mastoidectomy

Emergency bypass should be considered as a treatment option for VBI that is resistant to maximal medical treatment after confirming DWI findings and symptom mismatch. Our approach involving partial mastoidectomy provides a wide and shallow operative field for STA-SCA bypass, which allows accurate bypass with good outcomes.