Mimicking aneurysm in a patient with chronic occlusion of the left middle cerebral artery: A case report

Figure 2 Intraoperative photograph and preoperative computed tomography angiography image. A: A photograph captured under a microscope during surgery; B: A computed tomography angiography image of the same viewing angle. The green dots outline the arterial stump caused by occlusion of the middle cerebral artery, which has a sac-like, dilated appearance resembling an aneurysm; the red dots outline the distal occluded part of the middle cerebral artery, which extends to the lateral fissure and anastomoses with other arteries. The arrowhead indicates the narrowed M1 segment of the middle cerebral artery.