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August 16, 2010

Subungual Tumor in a 66-Year-Old Woman—Quiz Case

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Arch Dermatol. 2010;146(8):911-916. doi:10.1001/archdermatol.2010.174-a

A 66-year-old woman with a medical history of peripheral neuropathy was seen for a nonpainful, abnormal-appearing, left fifth toenail. The lesion had been present for many years. She denied a history of trauma. Examination revealed thick yellow discoloration and dystrophy of the proximal portion of the nail with underlying nonblanching erythema. The nail plate was surgically removed, revealing a soft, filiform papule (Figure 1) and cavities within the nail plate. Evaluation of routine hematoxylin-eosin–stained sections of the papule confirmed the diagnosis (Figure 2and Figure 3).

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