case_images: PMC3205486_01
case_images: Admission axial CT showing extensive thick basal SAH along the interpeduncular, quadrigeminal. and carotid chiasmatic cisterns, with intraventricular extension and early hydrocephalus
case_images: SNI-2-127-g001.jpg
case_images: PMC3205486_01_SNI-2-127-g001.jpg
case_images: F1
case_images: Her initial CT-scan revealed a severe SAH (thick basal SAH with intraventricular extension) [Figure 1].
case_images: (a, b) Admission lateral and AP angiographic images demonstrating a broad-based 2.7 mm x 2.5 mm x 1.8 mm aneurysm arising from the ventral aspect of the midbasilar trunk. The right vertebral artery seems to be small and slightly irregular. There is no laterally directed aneurysm that is noticeable
case_images: SNI-2-127-g002.jpg
case_images: PMC3205486_01_SNI-2-127-g002.jpg
case_images: F2
case_images: The aneurysm in the neck measured 2.7 mm in maximum dimension [Figures 2a and b].
case_images: Angiography showing a laterally directed, 1.5 mm newly formed sidewall aneurysm, arising from the basilar artery, approximately midway between the AICA and SCA. This aneurysm was inferior to the ventrally located and clipped aneurysm of the week before
case_images: SNI-2-127-g003.jpg
case_images: PMC3205486_01_SNI-2-127-g003.jpg
case_images: F3
case_images: An emergency angiogram demonstrated the growth of a distinct, laterally directed, sidewall aneurysm, arising from the basilar artery, approximately midway between the AICA and SCA [Figure 3].