Detailed view: The diagnosis "pigmented basal cell carcinoma" is visible at the left margin, where the spatter-like hyperpigmentation is found (accumulation of melanin clods in the tumor parenchyma, caused by the "accompanying proliferation" of melanocytes). At the upper pole local tumor decay and ulceration.
Granuloma anulare disseminatum. detail enlargement: Solitary or confluent, 0.2-1.5 cm in size, bluish to brownish, non-scaling or only slightly scaling spots, papules and plaques on the trunk in a 73-year-old male.
Demodex folliculitis: chronic bilateral follicular dermatitis with extensive reddening. Previous rosacea, but for months an unexpected significant worsening of the findings.
Becker nevus: extensive hyperpigmentation in the area of the right hip in a 7-year-old boy, existing since birth; section with emphasis on the follicles.
Lichen planus actinicus: anularsmaller lesions and merged into larger map-like borderline plaques; in the prominent borderline area the violet shade of lichen "ruber" is found.
Basal cell carcinoma, pigmented, black-brown stained, painless nodule with central erosion as well as marginal black-blue papules, which are arranged in a pearl necklace. Clearly actinic damaged skin.
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