case_images: PMC9062907_01
case_images: Computed tomography (CT) shows subarachnoid hemorrhage (upper, left) and left Sylvian hematoma (upper, right). Preoperative CT angiography demonstrates a saccular aneurysm (white arrow) (lower, left). Intraoperative images of post clip ligation indicating rupture of the aneurysm (white arrow) (lower, right).
case_images: SNI-13-117-g001.jpg
case_images: PMC9062907_01_SNI-13-117-g001.jpg
case_images: F1
case_images: Initial CT of the head revealed diffuse SAH in the basal cistern, thin subdural hematoma, intracranial hematoma (blood volume, 34.3 ml; 33 mm x 52 mm x 40 mm), and communicating hydrocephalus [Figure 1]. Three-dimensional CT angiography showed a saccular aneurysm arising from a bifurcation in the left MCA [Figure 1]. MCA aneurysm was confirmed as the bleeding point intraoperatively [Figure 1].
case_images: PMC9062907_02
case_images: Computed tomography demonstrates subarachnoid hemorrhage (upper). Oblique view of the left carotid injection shows internal carotid-posterior communicating artery aneurysm with a daughter sac (white arrow) (lower, left). Postoperative angiography reveals complete obliteration of the aneurysm (white arrow) (lower, right).
case_images: SNI-13-117-g002.jpg
case_images: PMC9062907_02_SNI-13-117-g002.jpg
case_images: F2
case_images: Initial CT of the head revealed thin SAH in the basal cistern (Fisher II) [Figure 2]. Three-dimensional CT angiography showed a saccular aneurysm arising from the IC-Pcom bifurcation [Figure 2]. The patient underwent intra-aneurysm coil embolization on the 1st day of SAH [Figure 2].
case_images: PMC9062907_03
case_images: Computed tomography (CT) (upper, left) and magnetic resonance imaging (upper, right) demonstrate subarachnoid hemorrhage (white and black arrows). Aneurysms were confirmed by CT angiography (white and black arrowhead) (lower, left) and were confirmed as the bleeding source intraoperatively (white arrow) (lower, right).
case_images: SNI-13-117-g003.jpg
case_images: PMC9062907_03_SNI-13-117-g003.jpg
case_images: F3
case_images: SAH in the interhemispheric cistern (Fisher II) [Figure 3]. SAH was also detected on fluid-attenuated inversion recovery magnetic resonance imaging [Figure 3]. Three-dimensional CT angiography showed a saccular aneurysm arising from the bifurcation of the Acom and MCA [Figure 3].