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Chapter 18. Dermatofibroma

Definition

An inflammatory process that develops secondary to trauma, usually in the form of a penetrating injury or rupture of a follicle, and that proceeds through stages of granulation tissue with numerous extravasated erythrocytes, granulomatous inflammation, and fibrosis. As is the case for other fibrosing dermatitides, such as scars and keloids, papules and nodules of dermatofibroma shrink in time and resolve as hyperpigmented macules, some of which even may be delled.

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