Occipital Pyogenic Abscess with Homonymous Hemianopia

This is a case of right occipital abscess with a left homonymous hemianopia. Number of Figures and legend for each: 8 figures Figure 1: Humphrey visual fields: Dense left homonymous hemianopia Figure 2: T2-weighted axial MRI : Round, hyperintense lesion (yellow arrow) in the right occipital lobe surrounded by edema Figure 3: T2-weighted axial MRI : The lesion is surrounded by cerebral vasogenic edema T1-weighted axial brain MRI without contrast Figure 4 : T1-weighted axial brain MRI with contrast: Peripheral ring enhancement of the lesion in the right occipital lobe Figure 5: DWI and ADC MRI: The lesion demonstrates restriction on diffusion weighted imaging (left; yellow arrow) with corresponding decreased signal on apparent diffusion coefficient (ADC) imaging (right; red arrow), suggesting a cerebral abscess Figure 6: Post-operative T1-weighted MRI with (right) and without (left) contrast showing show the limits of the craniotomy Figure 7: Post operative Goldmann visual fields showing dramatic improvement of visual fields post operatively