Luis R. Flores-Bozo, Departamento de Dermatología, Instituto Nacional de Ciencias Médicas y Nutrición Dr. Salvador Zubirán, Ciudad de México, México
Juan O. Colmenero-Mercado, Dermatology Department, Hospital Ángeles Universidad México, Mexico City, Mexico
Storiform collagenoma is a rare benign tumor that presents as an isolated circumscribed neoformation in the skin. It has been characteristically described in young women as a firm, asymptomatic, slow-growing, erythematous, whitish nodule, usually on the face, neck, or extremities.Dermoscopy shows a homogeneous structureless white lesion with erythema and arborizing vessels in peripheral distribution. It has a characteristic histological pattern, showing a dermal, hypocellular, well- circumscribed lesion, composed of thickened and homogenized collagen fibers that acquires a plywood-like pattern. The presence of multiple lesions is considered a marker of Cowden syndrome.
Keywords: Hamartoma. Collagen. Skin neoplasms. Skin.