Dermatofibroma is a very common benign tumor of the skin composed of fibrohistiocytic cells, which may occur anywhere on the body surface with a predilection for the extremities in adult patients. Clinically, dermatofibromas appear as firm, single or multiple hard papules, plaques or nodules, with a smooth surface, the usual color varying from light brown to dark brown, purple red or yellow. Characteristically, the lateral compression of these tumors may produce a dimple-like depression in the overlying skin, a feature known as the dimple sign. Dermoscopy is a non-invasive method used in the diagnosis and management of pigmented skin tumors.
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