PCA territory reinforcement

Abstract

The PCA stenosis/occlusion in moyamoya disease (MMD) has been known to increase the risk of transient ischemic attack and/or cerebral infarction in both anterior and posterior circulation area [8]. This finding was correlated with Yamada's study in which the regional cerebral blood flow in MMD decreases proportionally with the degree of steno-occlusive lesions of the PCA because the PCA lesions decrease the number of leptomeningeal vessels to the anterior circulation in MMD [9]. However, cortical branches of the PCA territory are so small in caliber that direct anastomosis between the occipital artery and the cortical branch is very difficult to achieve and not so effective in increasing the blood flow in the PCA territory, especially in pediatric patients. © 2010 Springer-Verlag Tokyo.