Congratulations to the winner of our February quiz, Dan Lipsker, MD, Faculté de Médecine, Université Louis Pasteur and Clinique Dermatologique, Strasbourg, France. The correct answer to our February challenge was cryofibrinoginemia. For a complete discussion of this case, see the Off-Center Fold section in the March Archives (Crichlow SM, Pavord SR, Mortimer NJ, Thurston H, Harman KE. An unusual case of leg ulceration. Arch Dermatol. 2008;144:405-410).