Adenoma sebaceum: in the 65-year-old female patient, skin-coloured to reddish-brownish, densely packed papules and plaques with centrofacial accentuation have existed since childhood; the misleading term "Adenoma sebaceum" refers to the characteristic centrofacially localised angiofibromas occurring in the context of tuberous sclerosis complex (Pringle-Bourneville phacomatosis).
Ear fistula and cyst, congenital. external fistula opening impresses as an inflamed red nodule with a central fibrin clot. proximal: melanocytic nevus.
Kaposi's sarcoma. 80-year-old patient with CML, which has been known for many years, has reddish-livid, rough plaques in the area of both plantae and cherry-sized, slightly bleeding tumor nodes in the area of both lower legs.
Melanoma, malignant, nodular. on UV-damaged skin, reddish-brown nodule with smooth, parchment-like surface. at the base spread of an irregularly configured and pigmented plaque.
Lichen planus anularis:few, ring-shaped, marginally progressive, centrally healing under hyperpigmentation, moderately itchy, lichenoid plaques; the lichenoid character of this lesion is recognizable in the marginal area by its livid colour and its surface gloss
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