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We report a unique case of a 69-year-old man who presented with a 1-year history of pink nodules and plaques limited to the anterior plantar surface of the right foot and a 30-year history of a callus on the right heel. Histologic examination findings of both areas showed deposits of amorphous, eosinophilic material and an infiltrate of plasma cells in the dermis. Congo red-stained deposits exhibited...