case_images: PMC3640228_01
case_images: Patient in Case 1. A normal head CT (left) and a normal MRV
case_images: SNI-4-60-g001.jpg
case_images: PMC3640228_01_SNI-4-60-g001.jpg
case_images: F1
case_images: Computed tomography (CT) scan and magnetic resonance imaging/magnetic resonance venography (MRI/MRV) were unremarkable [Figure 1].
case_images: PMC3640228_02
case_images: Patient in Case 2. Axial T1 MRI without (left) and with Gadolinium demonstrating thick nodular enhancement of the bilateral optic nerves
case_images: SNI-4-60-g003.jpg
case_images: PMC3640228_02_SNI-4-60-g003.jpg
case_images: F2
case_images: In addition, the patient's optic nerve sheaths were dilated and demonstrated thick nodular enhancement diffusely [Figure 2], consistent with leukemic infiltration of the optic nerve sheaths.