An obese 50-year-old woman with type 2 diabetes mellitus, hypercholesterolemia, and hypertension had blurry vision in both eyes. Assessment of extraocular motility showed an adduction deficit of the left eye. Imaging results confirmed the suspected diagnosis of tumefactive (atypical) multiple sclerosis, a rare form of demyelinating disease characterized by atypical MRI findings of mass-like demyelination.
