Arterio-venous shunt in the cavernous sinus with contralateral ocular signs.

AN arterio-venous fistula between the internal carotid artery and the cavernous sinus may occasionally present with contralateral signs. Only two other cases have been recorded in which the diagnosis has been confirmed by arteriography (Jefferson, 1952; Ramos and Mount, 1953). Two further cases, not verified by arteriography, have been reported by Walsh (1957) and Dandy and Follis (1941). The last of these cases was confirmed at post mortem. Ramos and Mount made no attempt to account for the contralaterality of signs. The following example presents some interesting problems.