Secondary anetoderma involving a pilomatricoma.

We describe an 11-year-old girl with secondary anetoderma involving a pilomatricoma. She presented with a soft, wrinkled pedunculated lesion overlying a firm subcutaneous mass on her right anterior shoulder. Pathologic examination revealed a pilomatricoma in the subcutaneous tissue, with focal loss of elastic fibers in the overlying dermis. Secondary anetoderma has been reported to involve various infections, inflammatory disorders, and tumors, but the association with pilomatricoma is very rare.