Fig. 3. Intraoperative photographs showing a large thrombosed aneurysm. A: Yellowish round mass (black arrow) was observed after navigation-guided transcortical approach at right frontal area. B: Small artery (white arrow) connected to the mass revealed under the mass. It seemed to be one of the lenticulostriate arteries. C: Vascular clip was applied at the parent artery and the distal end (white arrow) was coagulated by bipolar coagulator. D: The mass was totally excised, and there was no other complication at the operation site.
