Derm Dx: Firm Nodule on the Hand

A 25-year-old white woman presents for evaluation of a growth on the dorsal surface of her left hand. The lesion has been present for approximately 5 years. She denies localized pain, paresthesia, or loss of hand coordination. The growth was drained of fluid 2 years ago but has since recurred. Examination reveals a firm nodule fixed to underlying tissue.

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