Pulsatile proptosis is a feature of -: (A) Orbital varix, (B) Retinoblastoma, (C) Coico-cavernous fistula, (D) Covernous sinus thrombosis
Answer is C. Pulsatile proptosis is seen in caroticocavernous fistula and saccular aneurysm of ophthalmic aery.it also occurs due to transmitted cerebral pulsations in conditions associated with deficient orbital roof. Ref .ak khurana 6th edition pg no 404 REF IMG