case_images: PMC11225523_01
case_images: (a) Magnetic resonance imaging performed before stereotactic radiosurgery showing a vestibular schwannoma and (b) axial dose distribution on a vestibular schwannoma target volume superimposed onto the computed tomography scans. The isodose curves corresponding to 20 Gy (cyan) and 10 Gy (green) are shown.
case_images: SNI-15-213-g001.jpg
case_images: PMC11225523_01_SNI-15-213-g001.jpg
case_images: F1
case_images: A 68-year-old man underwent linear accelerator radiotherapy-based SRS of 20 Gy in three fractions for right VS [Figure 1], which was radiographically diagnosed without tissue biopsy.
case_images: (a) Computed tomography on admission, (b) left vertebral angiogram showing a fusiform aneurysm of the distal anterior inferior cerebellar artery, (c) angiogram after endovascular aneurysmal coil embolization and parent artery occlusion, and (d) postoperative diffusion-weighted magnetic resonance imaging.
case_images: SNI-15-213-g002.jpg
case_images: PMC11225523_01_SNI-15-213-g002.jpg
case_images: F2
case_images: Computed tomography revealed a diffuse subarachnoid hemorrhage (SAH) with a predominance of bleeding in the right posterior fossa cisterns [Figure 2]. The aneurysm was approximately 2.9 mm in size and was located at a nonbranching point of the right main AICA [Figure 2]. PAO of the nonbranching section of the AICA with n-butyl cyanoacrylate [Figure 2]. Postoperative MRI revealed an infarction on the right side of the pons and brachium pontis [Figure 2], causing mild cerebellar ataxia, severe right facial nerve palsy (House-Brackmann Grade 4), and abducens palsy.