Reverse Foster Kennedy Syndrome Caused by an Intra-axial Tumor.

We present a case of a 23-year-old male complaining of painless loss of vision in right eye for 1 year and rapidly progressing vision loss in left eye with bilateral lateral rectus palsy. His fundoscopy revealed optic atrophy on the right side and papilledema on the left. Magnetic resonance imaging (MRI) showed intra-axial contrast-enhancing left frontal tumor. We discuss this first case of reverse Foster-Kennedy syndrome in the English literature with emphasis on the clinico-radiological and clinico-histopathological correlation.