Congratulations to the winner of our November quiz, Jørgen Krohn, MD, Department of Ophthalmology, Haukeland University Hospital, Bergen, Norway. The correct answer to our November challenge was carotid cavernous fistula. For a complete discussion of this case, see the Surgical Technique section in the December Archives (Badilla J, Haw C, Rootman J. Superior ophthalmic vein cannulation through a lateral orbitotomy for embolization of a cavernous dural fistula. Arch Ophthalmol. 2007;125:1700-1702).