Basal cell carcinoma, pigmented basal cell carcinoma, partly nodular, partly growing only in the skin level, with rough consistency, ulceration at the right tumor margin, difficult clinical differentiation to a nodular malignant melanoma.
keratosis seborrhoeic: multiple flat wart-like skin growths that have persisted for years. arrows mark smaller, flat, light brown seborrhoeic keratoses. encircled: verucosal plaques or nodules that have existed for a long time (several years). patient complains of itching at times.
Syphilide, papular: multiple, disseminated, dense, small, reddish papules and nodules on a tanned integument in a 67-year-old patient; distinctly palpable, non-painful axillary and inguinal lymph nodes.
lupus erythematosus acute-cutaneous: clinical picture known for several years, occurring within 14 days, at the time of admission still with intermittent course. anular pattern. in the current intermittent phase fatigue and exhaustion. ANA 1:160; anti-Ro/SSA antibodies positive. DIF: LE - typical.
Psoriasis seborrhoeic type: Chronic recurrent, sharply defined red spots and plaques, which are localized in the chest area of a 70-year-old man and run along the anterior sweat channel.
melanoma, malignant, nodular. solitary, since 1-2 years existing, ca. 0.8 cm in diameter, completely without symptoms, firm lump in a 47-year-old woman. the lump is centrally and on the right side black-brown crusty bordered. on the left side a brown-red, smooth surface is visible. since 6 months increase in size and occasional small bleedings with subsequent accumulation of blood crusts.
Differential diagnosis "candidiasis intertriginous" : present psoriasis intertriginosa: infection-related acute relapsing activity of a long term known psoriasis vulgaris.
transient acantholytic dermatosis. detail enlargement from previous overview. initial papules, about 1-2 mm in size, deep red with slightly eroded, occasionally scaly surface, characterize the picture. in addition, older plaques (top right) resulting from confluent papules with slight marginal scaling are visible. the nikolski phenomenon is negative.
Lupus erythematodes tumidus: Plaques existing for 3 months, localized on the back and face, irregularly distributed, sharply defined, 0.2-3.0 cm in size, flatly raised, clearly increased in consistency, slightly sensitive, red, smooth plaques; no significant scaling.
Melanoma, malignant: diffuse, cutaneous metastasis (amelanotic metases) in the area of the thoracic wall; primary tumor: nodular melanoma pT3a; post-operative 2 years ago.
Anular sarcoidosis: anular or circulatory chronic sarcoidosis of the skin. existing for several years. onset with small symptomless papules with continuous appositional growth and central healing. no detectable systemic involvement .
Lichen planus exanthematicus. 4 months old, distinctly itchy exanthema with pinhead-sized, slightly raised, partly isolated, but also aggregated to larger plaques, smooth, shiny, red papules. Streaky arrangement of the efflorescences in scratch or rub marks (Koebner phenomenon; seeleft half of the buttocks).
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