What Is Your Diagnosis?

VOLUME 97, FEBRUARY 2016 89 WWW.CUTIS.COM PLEASE TURN TO PAGE 115 FOR DISCUSSION A 56-year-old woman presented at the clinic for a total-body skin examination. A pigmented lesion was found on the medial aspect of the left first toe during the examination. The patient did not recognize this spot as a long-standing nevus. The area was scrubbed vigorously with an alcohol swab, which did not change the pigment. Clinically the lesion was concerning for an atypical nevus. Dermoscopic examination showed an unusual pattern with pigment deposition in ridges and on furrows. What Is Your Diagnosis?

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