Leslie Paton1 in 1909 was the first to call attention to the observation that in association with a basofrontal tumor there is apt to be atrophy of the optic nerve on the side of the tumor and choked disk on the opposite side. However, it was Foster Kennedy,2 in 1911, who emphasized and amplified this ophthalmologic symptom complex, which he felt was diagnostic of the presence of a basofrontal tumor or abscess. According to him the symptom complex comprised the existence of a central scotoma and primary optic nerve atrophy in the eye on the side of the lesion with concomitant papilledema in the opposite eye. Since that time this syndrome has been included in practically all the standard textbooks on neurology and has come to be recognized, when present, as a diagnostic criterion of the existence of an expanding lesion of the basofrontal region or the anterior