The correct answer to our March quiz was cutaneous myoepithelioma. For a complete discussion of this case, see the Off-Center Fold section in the April Archives (Troiani BM, Welsch MJ, Heilig SJ, Helm KF, Clarke LE. A firm nodule on the arm. Arch Dermatol. 2011;147:499-504).
Be sure to visit the Archives of Dermatology Web site (http://www.archdermatol.com) to try your hand at the interactive quiz. We invite visitors to make a diagnosis based on selected information from a case report or other feature scheduled to be published in the following month's print edition of the Archives. The first visitor to e-mail our Web editors with the correct answer will be recognized in the print journal and on our Web site and will also receive a free copy of The Art of JAMA II.
March 2011 Archives Web Quiz Winner. Arch Dermatol. 2011;147(6):730. doi:10.1001/archdermatol.2011.115