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The correct answer to our March challenge was plantar fibromatosis (Ledderhose disease). For a complete discussion of this case, see the Off-Center Fold section in the April Archives (Erkek E, Bozdogan O. A protuberant nodule under the foot. Arch Dermatol. 2008;144:547-552).
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 2008 Archives Web Quiz Winner. Arch Dermatol. 2008;144(6):785. doi:10.1001/archderm.144.6.785
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