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Posts by Mark Juhl, MD

Evaluation of Longitudinal Melanonychia

HISTORY An 84-year-old woman with a history of melanoma of the left upper back presents with an 11 month h/o left great toe discoloration. Biopsy of left great toe was performed on 08/05/2019. Previous h/o discoloration of the right fifth toe was biopsied and was negative for malignancy. DISCUSSION What is the cause of melanonychia…

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