Keratoakanthoma classic type: In actinic severely damaged scalp opened, fast growing (since about 6 weeks existing) painless lump with peripherally raised wall and a central horn plug.
Lentigo solaris (solar lentigo): a slow-growing, symptom-free, brown spot, which has been present for years, is a good 2.5 cm in size, sharply defined, with a velvety surface; conspicuous actinic elastosis of the unaffected cheek skin.
Keratosis palmoplantaris circumscripta seu areata: Lateral view: Since birth existing, verrucous, hyperkeratotic plaques on digitus III of the left hand in a 10-year-old female patient.
Acanthosis nigricans benigna: blurred brown-black spots and plaques. the plaques are characterized by a slightly sooted, leathery surface. no subjective symptoms.
Granuloma anulare disseminatum:non-painful, non-itching, disseminated, large-area plaques that appeared on the trunk, face, neck and extremities of a 45-year-old female patient. No diabetes mellitus. No other systemic diseases.
Sarcoidosis plaque form: large, symptom-free plaque on the capillitium that has existed for several years; scarred hairless state after healing under fumaric acid ester.
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