Congratulations to the winner of our October quiz, Vijay Zawar, MD, DNB, DVD, consultant dermatologist, Nashik, India. The correct answer to our October challenge was bisphosphonate-related osteonecrosis of the jaw. For a complete discussion of this case, see the Off-Center Fold section in the November Archives (Mas A, Mascaró JM Jr. Chronic indurated gingival ulceration. Arch Dermatol. 2010;146:1301-1306).