Generalized cGVHD: generalized, lichenoid, only moderately itchy, exanthema with hyperpigmentation, occurring about 2 years after stem cell transplantation.
AIN: perianally localized, less sympotmatic, extensive, whitish erosive plaque at 3 o'clock; secondary findings anal fissure at 6 o'clock (actual cause of the doctor's visit)
Xanthogranuloma juveniles (sensu strictu). soft elastic, yellowish, completely asymptomatic, hardly elevated plaques. no Darier's sign! 10-month-old female infant with multiple xanthogranulomas. size growth in the first months of life.
parapsoriasis en plaques, benign small hereditary form. 55-year-old patient with small spotted parapsoriasis en plaques (also called chronic superficial dermatitis). the distribution pattern (fingerprint dermatosis) in the longitudinal direction of the skin tension lines is almost diagnostic. occasionally slight itching (mostly in the winter months). in summer (after sea vacation) almost healed. histology is often not conclusive.
Scabies:explanatory presentation; chronic (existing for months) generalized, "eczematous", enormously itchy disease pattern with rough papules in the shape of a duct (here marked by black lines), encircling a chronically eczematized skin area without detectable duct structures.)
Kaposi's sarcoma. 37-year-old man infected with HIV has some circumscribed, symptomless, red plaques in the area of the nose. development within one month. conspicuous follicular accentuation in the lesions. smooth skin surface, no scaling. similar skin changes still exist on palmae and plantae as well as on the glans penis. development within one month.
Papillomatosis cutis lymphostatica: massive findings with papillomatous growths in the heel region, on the back of the foot and toes; chronic lymphedema after recurrent erysipelas.
Primary cutaneous marginal zone lymphoma: 10 monthsago , first appearance of red, surface smooth papules and plaques in a 59-year-old patient; no scratch excoriations, no scaling, no pruritus.
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