Lichen simplex chronicus indark skin. several lesions with 0.1-0.2 cm large, marginally disseminated, firm brown-black papules confluent in the centre of the lesions. permanent itching.
Keratosis areolae mammae naeviformis: Chronic stationary plaque in a 45-year-old man, unchanged for years, limited to the nipple and areola, moderately increased in consistency, without symptoms, brown, rough (warty) plaque.
Tinea corporis: unusually elongated, large-area tinea corporis, pretreated for several months with a potent corticosteroid steroid externum; distinct itching on interruption of steroid therapy (existing for 8 months).
Erythema gyratum repens: Anular, also garland-shaped, slightly infiltrated, reddish-brown plaques, sometimes scaly. No itching. Known bronchial carcinoma.
Nipple, accessory: solitary, 0.8 cm high, symptomless, brown plaque with a decentralized pointed conical papule and coarsely felted surface; previously known circumscribed scleroderma.
Circumscribed scleroderma (plaque type): brownish plaques that have existed since early childhood, are only slightly indurated, unilateral, and completely asymptomatic.
Lentigo maligna with transition to a lentigo maligna melanoma: bizarrely configured brown spot with palpable induration in the distal part (darker colored).
Nevus, melanocytic nevus giganteus. Congenital mole in a 41-year-old male. No subjective complaints. Congenital congenital hairy dark brown giant pigment nevus covering the entire back.
Acanthosis nigricans maligna: Severe infestation of the back with hyperkeratotic papules on yellow-brown hyperpigmentation in a 75-year-old female patient with ovarian cancer.
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