Figure 4: Contrast enhanced axial sections of T1-weighted MRI of the brain showing a large, saccular, partially thrombosed aneurysm measuring 3.4cm × 3cm on the right side, and 3.8 cm × 3.6 cm on the left. Both are located in the cavernous segment of bilateral internal carotid arteries and are causing mass effect on the intracranial portions of bilateral optic nerves, more on the left compared to the right side