Basal cell carcinoma, nodular: Development of a basal cell carcinoma on a (congenital) sebaceous nevus. The carcinomatous transformation took place chronically insidiously without any symptoms. Only a recurring crust formation with intermediate weeping led to the pioneering biopsy.
Erythema exsudativum multiforme. multiple, highly acute, 4-day-old, extensive erosions in the area of the oral cavity and lips in an HIV patient. severe pain on ingestion. foetor ex ore.
Dermatitis chronic actinic (type light-provoked atopic eczema). general view: Disseminated, scratched papules and plaques, nodular in places, as well as blurred, large-area, reddened, severely itching erythema on the face of a 51-year-old female patient with atopic eczema existing since birth. the skin changes can be provoked by sunlight and photopatch testing.
Parapsoriasis en plaques, grandiose: completely symptomless, sharply defined, disseminated spots and plaques; only when the skin is folded does a cigarette-paper-like pseudoatrophic architecture of the skin surface become visible (important diagnostic sign!).
Necrobiosis lipoidica. necrobiosis lipoidica slowly "growing" for several years. large, rather discrete scarring in the centre. yellow-brownish plaque at the edges.
Pemphigus vulgaris: multiple, chronic, since 3 years intermittent, symmetric, trunk-accentuated, easily injured, flaccid, 0.2-3.0 cm large, red spots, plaques and pallor, confluent to, weeping and crusty areas; extensive infestation of the oral mucosa and capillitium.
Carcinoma cutanes:advanced, flat ulcerated exophytic squamous cell carcinoma with massive actinic damage. 82-year-old man with androgenetic alopecia. Pronounced spring carcinoma.
Dermatitis contact allergic: 53 years old, still working bricklayer. chronic eczema with disseminated red, partly skin-coloured papules, which in places have conflated to blurred, lichenified plaques. furthermore discrete, laminar, fine-lamellar scaling as well as multiple partly encrusted erosions. distinct itching. proven chromate sensitisation.
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