A case of dystrophic calcinosis cutis arising from the lesion of clear cell syringoma

Dystrophic calcinosis cutis is diagnosed, when calcium is deposited in the previously damaged tissue by connective tissue disease, panniculitis, pseudoxanthoma elasticum or trauma. We report a case of dystrophic calcinosis cutis arising from the lesion of clear cell syringoma. A 73-year-old woman presented with asymptomatic, multiple, skin-colored to whitish flat papules on the forehead. A punch biopsy specimen revealed amorphous basophilic materials in the upper dermis, as well as a large number of nests of clear cells in the middle dermis.