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.
Acne inversa: severe clinical, therapy-resistant finding in a 52-year-old female patient. existing since the age of 20. conspicuous sausage-shaped scar strands.
melanoma malignes amelanotic: since early childhood a pigment mark is known at this site. continuous growth for several years. for half a year extensive ulceration of the node. no significant symptoms.
Melanoma, malignant, amelanotic. detail enlargement: Cherry-sized tumor, completely eroded on the surface, with yellowish crusts on the edges, sharply defined.
Pilomatrixoma (Epithelioma calcificans): Reddish-brown, calotte-shaped node that is displaceable in relation to the underlying tissue, slightly painful, slowly progressive.
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