case_images: PMC6766670_01
case_images: Pre-op CTA.
case_images: CRINM2019-6049573.002.jpg
case_images: PMC6766670_01_CRINM2019-6049573.002.jpg
case_images: fig2
case_images: CT angiography (CTA) revealed that a partially thrombosed aneurysm measuring 25 x 19 mm was located at the vertebrobasilar junction (AICA arises), causing mass effect on the pons (Figure 2).
case_images: Head position.
case_images: CRINM2019-6049573.003.jpg
case_images: PMC6766670_01_CRINM2019-6049573.003.jpg
case_images: fig3
case_images: The patient was in the supine position with the head turned right 80  and extended 30  (Figure 3).
case_images: C-shaped incision.
case_images: CRINM2019-6049573.004.jpg
case_images: PMC6766670_01_CRINM2019-6049573.004.jpg
case_images: fig4
case_images: C-shaped incision was made from mastoid process to hairline on the left side (Figure 4).
case_images: Temporal muscle dissection.
case_images: CRINM2019-6049573.005.jpg
case_images: PMC6766670_01_CRINM2019-6049573.005.jpg
case_images: fig5
case_images: Temporal muscle was dissected to expose the temporobasal region as well as zygomatic root, and the lateral suboccipital region as well as the complete mastoid (Figures 5 and 6).
case_images: Mastoid drilling.
case_images: CRINM2019-6049573.006.jpg
case_images: PMC6766670_01_CRINM2019-6049573.006.jpg
case_images: fig6
case_images: Temporal muscle was dissected to expose the temporobasal region as well as zygomatic root, and the lateral suboccipital region as well as the complete mastoid (Figures 5 and 6).