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Benign adnexal lesions

Publicado en:Dermatoscopy Of Non-Pigmented Skin Tumors: Pink - Think - Blink. 89-92 - 2016-01-01 (), DOI: 10.1201/b18754-24

Autores: Zaballos P

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Resumen

Adnexal lesions are categorized into three groups, based on their histologic differentiation: sebaceous, follicular, and eccrine and apocrine. There is certain controversy, benign sebaceous lesions are basically classified into sebaceous nevus, sebaceous hyperplasia, sebaceous adenoma, and sebaceoma. Two main dermoscopic structures are associated with sebaceous lesions: aggregated white-yellowish globules or areas and vascular structures. In general, the dermoscopic pattern of sweat gland tumors also displays features overlapping with basal cell carcinoma. In apocrine hydrocystomas, the most common dermoscopic pattern is composed of arborizing telangiectasias on a pinkish, yellowish, or bluish homogeneous area that occupies the whole lesion. The reported patterns of cylindromas include arborizing telangiectasias on a whitish-pink background, blue dots and globules, and ulceration. Poromas and hidradenomas are characterized by a high degree of dermoscopic variability mimicking basal cell carcinomas, melanomas, or keratinizing tumors depending on its histopathologic subtype or variant and the degree of pigmentatio. A case of tubular apocrine adenoma showed telangiectasias and large blue-gray ovoid nests.

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