Giant keratoakanthoma: 4 cm in diameter large, painless lump with peripheral lip formation and central horn plug. Initial rapid growth, now no detectable size growth for several months.
Boils. 38-year-old patient with recurrent boils. 2.5 x 2.0 cm large, spontaneously formed, pressure-marked, flat raised lump with yellow necrotic tip and scaly crown.
Prurigo simplex subacuta: 54-year-old female patient with a clinical picture that has been progressive for two years. severe, uncontrollable itching. the rough papules up to 0.8 cm in size with marginal hyperpigmentation are centrally eroded or ulcerated or even covered with older crusts (centre of the figure). a typical picture of itchy Prurigo simplex subacuta are the scratch artefacts limited to prurigo lesions.
Acne inversa. severe clinical, therapy-resistant findings in a 52-year-old female patient. existing since the age of 20. keloid scars. furthermore inflammatory papules, nodules and extensive indurations.
Ulcerated melanoma: 8 cm large, nodular ulcerated (largely amelanotic) melanoma on the right flank, growth over 5 years. The patient died 3 months after diagnosis due to cerebral metastasis.
Primary cutaneous CD30 positive large cell T-cell lymphoma: for 2 -3 years nodules have been forming in the skin; for 3 months rapid progression with rapidly expanding nodules which ulcerate over the entire surface in a very short time.
V:ari cells:generalized, but only moderately pronounced exanthema with erythema, vesicles, papules, papulopustules on the stem of a 24-year-old female patient.
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