Calcinosis cutis results from deposits of calcium and phosphorus in the skin. Calcinosis cutis may be divided into four major categories: dystrophic, metastatic, idiopathic and iatrogenic. A 19-year-old female presented with multiple brown or skin-colored, stony hard plaques on the face, trunk, arm and thigh for 18 months. She did not have any familial and medical history. None of the laboratory findings, including serum calcium, phosphate and autoantibodies for connective tissue disease, was significant. X-ray examination of bones evidenced multiple reticulated heterotrophic calcifications and whole body bone scan evidenced increased radiotracer uptake according to cutaneous or subcutaneous tissue. This case is compatible with idiopathic calcinosis universalis. Treatment with diltiazem was started.
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