Ulcerated squamous cell carcinoma: cauliflower-like, firm, less pain-sensitive, eroded and ulcerated, weeping nodule, which has been present for > 1 year and is constantly enlarging.
Incontinentia pigmenti achromians: Mosaic-like hypopigmentations of the left trunk and leg in a 2-year-old girl which appeared for the first time in the 4th month of life and have been progressive since then.
Necrobiosis lipoidica: chronic, sharply defined, flat, centrally atrophic, smooth plaque with clearly brown-red tinged edges; shining through of the underlying veins is characteristic.
Primary cutaneous marginal zone lymphoma: localized red (surface smooth) plaque with circulatory margins, known for several months, only moderately consistent, no evidence of systemic involvement.
Scleroderma ligamentous: for years slowly progressive, only moderately indurated ligamentous morphea in a 42-year-old woman; no movement restrictions of the joints.
Psoriasis palmaris et plantaris (plaque-type chronic inpatient plaquepsoriasis of the sole of the foot with coarse desquamation and painful hare formation. no topical pre-treatment
Vasculitis leukocytoclastic (non-IgA-associated): multiple, since 1 week existing, on both legs symmetrically localized, irregularly distributed, 0.1-0.2 cm large, confluent in places, symptomless, red, smooth spots (not compressible).
Scleroderma circumscribed, atrophying type (Atrophodermia idiopathica et progressiva Pasini-Pierini): Rather beekeeping development for about 1/2 year, no subjective complaints.
Granuloma anulare erythematous type. little indurated, marginal reddish-brown plaque with indicated central atrophy. slow centrifugal growth lasting for months. Granulomatosis disciformis chronica et progressiva is to be considered as a differential diagnosis (entity).
Purpura thrombocytopenic: acutely occurring, partly large-area, partly punctiform, non-anemic spots with a tendency to confluence; sudden onset with fever, multiple thromboses, disorientation, stupor; it is a drug-induced form of thrombotic thrombocytopenic purpura with hemolytic microangiopathic anemia at the base of an infectious disease and a previously unknown drug allergy.
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