Most CAVMs nidus were located in cerebral hemispheres.Four in the temporal lobe, two in the parietal lobe, three in the frontal lobe, two in the occipital lobe, and three in the corpus callosum.

• 病灶大多发生于两侧大脑半球，4例在嗫叶，2例在顶叶，3例在额叶，2例在枕叶，3例在胼胝体，1例混合型含2个病灶，分别在额叶和胼胝体。