The Foster Kennedy sign: a case with papilledema contralateral to a sphenoid wing meningioma but without apparent optic atrophy.

A 28 year old lady with a one year history of mental changes and headaches presented with right fundus normal but with marked papilledema on the left. Subsequent evaluation demonstrated a right sphenoid wing meningioma which was successfully removed as an emergency procedure. The case illustrates the well known clinical dictum that the side of unilateral papilledema offers little information concerning tumor localization.