<unk>  (also known as "Acanthome<unk> ules claires of Degos and Civatte," "Degos acanthoma," and "Pale<unk>  acanthoma") is a benign clinical and histological lesion initially described as neoplastic, which some authors now regard as a reactive dermatosis. It usually presents as a moist solitary firm, brown-red, well-circumscribed, 5 mm to 2 cm nodule or plaque on the lower extremities of middle-aged to elderly individuals The lesion has a crusted, scaly peripheral collarette and vascular puncta on the surface. It is characterized by slow growth, and may persist for years. The clinical differential diagnosis includes: dermatofibroma, inflamed seborrheic keratosis, pyogenic granuloma, basal<unk>  carcinoma, squamous<unk>  carcinoma, verruca vulgaris, psoriatic plaque, and melanoma.
Clear cell acanthoma
Keratoacanthoma
Acanthoma
Nevus sebaceous
White sponge nevus
Keratin pearl
Sebaceous hyperplasia
Angiokeratoma