Fig. 2From: Complex intracranial vascular complications caused by essential thrombocythemia: a critical case reportDSA displayed multiple filling defects in V1 and V2 segments of the right vertebral artery (black arrow), occlusion in V3 segment of the right vertebral artery (white arrow), and multiple filling defects (black arrow) in V1 to V2 segments of the left vertebral artery (a-c). Right transverse and sigmoid sinuses were not apparent by DSA (d, black arrow)Back to article page