[Cutaneous divalent ions and uremic pruritus].
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Biomedical subjects
Publications and source records attributed to C Crosti.
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Four cases of disseminated superficial actinic porokeratosis are described, all in patients who had been given immunosuppressive treatment, which might have been a contributing factor in the development of the condition. The possible relationship of immunosuppressive actinic porokeratosis to viral infection is also discussed.
Peripheral blood T-cell subpopulations were evaluated in 36 patients with clinically different types of warts, subdivided in 4 groups (common, genital, flat and plantar warts). A significant decrease was found in OKT3 and OKT4 subsets total count and in OKT4/OKT8 ratio in patients with common and genital warts as compared with controls. Only in common and genital warts did we also observe a significant decrease of percentage of OKT4 subset. No significant difference of considered parameters was observed in flat and plantar warts as compared to controls, apart from a significant increase in number of OKT8 subset in flat warts. We then discuss this different status of C.M.I. in patients with different clinical warts, stressing the importance of various types of HPV.
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Sixty-seven out of 100 kidney transplant recipients treated with cyclosporin and methylprednisolone were evaluated for the presence of dermatological manifestations. Only 2 patients had no dermatological lesions; 80% had iatrogenic lesions, 38% infectious, 13% miscellaneous, 3% cancerous lesions, while 28% had cutaneous manifestations related to previous uremic state. Most of the lesions concerned the pilosebaceous unit: hypertrichosis (60%), epidermal cysts (28%), pilar keratosis (21%), acne (15%), folliculitis (12%) and sebaceous hyperplasia (10%). Among infectious manifestations, viral lesions were the most frequent and were very severe in the first month after transplantation. Two patients developed a squamous-cell epithelioma and a probable cutaneous lymphoma, respectively.
A 27-year-old man presented with a reddish hard-elastic plaque on his back near the right armpit, which had slowly developed during 1 year. A granulomatous infiltration with many giant cells which were phagocytizing lymphocytes and elastic fibers was seen at histological examination. The lesion was removed and no new lesions developed after surgery. This case may represent a localized form of Convit's 'Progressive atrophying chronic granulomatous dermohypodermitis' or a rare form of 'Maladie de Besnier-Boeck-Schaumann chalazodermique', but it is also possible that it is a new entity never described before.
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94 uremic patients, 68 on regular hemodialysis treatment (RHT) and 26 on chronic ambulatory peritoneal dialysis (CAPD), were followed for up to 20 months in search of dermatological manifestations. 79% of RHT and 76% of CAPD patients had some kind of cutaneous lesion. The most characteristic features of cutaneous involvement in RHT and CAPD patients were: cutaneous xerosis, pruritus, infectious manifestations and disorders of pigmentation. In 4 RHT patients, precancerous and cancerous manifestations were also observed.