Cutis
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The diverse patterns of skin lesions occurring in black patients with sarcoidosis are described. Shiny, somewhat waxy papular lesions are the most frequent cutaneous manifestation of sarcoidosis in blacks. Erythema nodosum remains an infrequent finding when compared with the frequency of other cutaneous lesions. Because of its protean cutaneous manifestations, sarcoidosis should be included in the differential diagnosis of all chronic dermatoses in blacks.
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The nails are commonly involved in cases of lichen planus of the skin and mucous membranes. However, in rare instances, the nails alone may be affected. A case of lichen planus limited to the nails in a 10-year-old boy is reported.
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We report on a 31-year-old man with keratosis punctata (punctate hyperkeratosis) of the palmar creases. We examined a lesion ultrastructurally and were unable with routine electron microscopic techniques to note any significant abnormalities.
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A case of pigmented purpuric lichenoid dermatitis of Gougerot-Blum is presented and the pertinent literature is reviewed. This case is unusual in that the lesions were unilateral and very limited in extent. The patient presented with a localized pigmented purpuric eruption of plaques on the dorsum of one foot which mimicked Kaposi's sarcoma. However, a biopsy confirmed the diagnosis of pigmented purpuric lichenoid dermatitis of Gougerot-Blum.