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.
Congenital melanocytic nevus. brown, soft, papillomatous plaque sharply demarcated from the surrounding normal skin. no change in colour or shape has been detected so far apart from the "physiological" size growth.
Basal cell carcinoma, nodular. solitary, 1.0 x 1.2 cm large, broad-based, firm, painless nodule, with a shiny, smooth parchment-like surface covered by ectatic, bizarre vessels. Note: There is no follicular structure on the surface of the nodule (compare surrounding skin of the bridge of the nose with the protruding follicles).
Keratosis palmoplantaris diffusa circumscripta: Thick, waxy, yellowish, plate-like horny layer that covers the entire palm of the hand and also the sole of the foot; the mobility of the hands is restricted.
Demodex folliculitis: chronic bilateral follicular dermatitis with extensive reddening. Previous rosacea, but for months an unexpected significant worsening of the findings.
Melanosis neurocutanea: General view: Huge melanocytic nevus occupying nearly the whole trunk in a 39-year-old man with neurocutaneous melanosis and neurofibromatosis generalisata.
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.
Leprosy. leprosy lepromatosa (-LL-): disease pattern with papules and nodules in diffuse distribution that has been continuously developing for many years; loss of eyebrows, partial loss of eyelashes (Alopecia lepromatosa)
Hyperpigmentation, post-inflammatory. Chronic stationary, multiple, disseminated or confluent, brown-red or brownish smooth spots on the lower legs of a 26-year-old patient. The spots have developed over a longer period of time from brown-red, verrucous plaques that had developed as part of a lichen planus verrucosus.
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