Squamous cell carcinoma of the skin: a slow-growing, wart-like, encrusted nodule that has existed for about 2 years and has been painful in the last few weeks, which was treated several times as a "subungual viral wart".
Nodular, extensive ulcerated basal cell carcinoma. since >10 years slowly growing exophytic, non-painful, fleshy tumor which was covered with a compress. marked with arrows, a glassy border wall which is (still) characteristic for advanced basal cell carcinoma.
Hemangioma, cavernous. reflected light microscopy: Section of a lesion of the thigh of a 39-year-old woman. multiple, red, livid and blue-grey, round and oval lacunae. white-blueish, opaque septations (blood-filled cavities lined with endothelium press the papillary connective tissue against the reteleal ridges).
Acne keloidalis nuchae: multiple, solitary or confluent, follicular light red papules, pustules and nodules, some of which are pierced by terminal hairs
Melanoma, malignant, acrolentiginous. solitary, chronically stationary, slowly increasing, localized at the right big toe, measuring approx. 0.5 cm, touch-sensitive, red node ulcerated with a dark pigmented part (see circle and arrow marking) Histology: tumor thickness 2.7 mm, Clark level IV, pT3b N0 M0, stage IIB.
Granuloma eosinophilicum faciei. red lump in the area of the cheek in a child, existing for months, not painful. slow progression of size. here typically a somewhat "punched" surface.
Carcinoma cutanes:advanced, flat ulcerated exophytic squamous cell carcinoma with massive actinic damage. 82-year-old man with androgenetic alopecia. Pronounced spring carcinoma.
Pyodermia vegetans: General view: Clearly putrid, round ulcerations as well as crusts and punctual hyperpigmentation on the right lower leg of a 17-year-old Indian woman.
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