=====Occipital artery to posterior cerebral artery bypass=====

OA-PCA [[bypass]] represents a useful alternative to conventional [[superficial temporal artery to superior cerebellar artery bypass]] STA-SCA or PCA bypass
((Kazumata K, Yokoyama Y, Sugiyama T, Asaoka K. Occipital-posterior cerebral
artery bypass via the occipital interhemispheric approach. Surg Neurol Int. 2013 
Jul 12;4:90. doi: 10.4103/2152-7806.114975. eCollection 2013. PubMed PMID:
23956933; PubMed Central PMCID: PMC3740606.)).