Medicina cutanea ibero-latino-americana最新文献

Hypersensitivity reactions to aluminium are very rate. Sensitization has been reported to occur during continuous application of aluminium-containing antiperspirants or by aluminium adjuvants in vaccines and hyposensitization immunotherapy. We report 5 patients who developed persistent and itching subcutaneous nodules following immunotherapy. Histologically, the nodules showed a granulomatous reaction consistent with delayed hypersensitivity to aluminium. Patch tests with 2% aluminium chloride in water were positive in three patients, and positive results of patch test with other metals (nickel, cobalt) were frequently associated.

The authors present a case of mycosis fungoides with an early onset, at the age of 15 years. It was manifested as hypopigmented lesions and was associated with follicular mucinosis. The invulgar aspects of this case let to erroneous diagnosis and possibilitate the evolution of disease to the tumoral phase. The patient presented a good response to therapy.

Description of the first case of angio-immunoblastic lymphadenopathy with dysproteinemia diagnosed in a male patient 64 years old and which preceded the development of a lymphoma. The importance of this study is the association that may exist between certain drugs and the development of angioimmunoblastic lymphadenopathy, which occurred in our patient with the use of diphenylhydantoin. This disease can present itself up to 22 years after exposure to the agent.

A HIV infected patient was admitted to hospital with fever diarrhoea and a cutaneous nodule on his left groin. Histopathological exam was diagnostic of cutaneous leishmaniasis. Subsequent exams disclosed Visceral Leishmaniasis. Three cycles of treatment (antimonials, pentamidine and metronidazole) were required for the clearance of lesions. The relation between immunosuppression and leishmania infection is commented and its role as an opportunistic pathogen is suggested. In these patients the infection takes a more aggressive course and has a worse response to the classic treatment with antimonials. These facts have made necessary the introduction of other alternative drugs.

The syndrome of the sea-blue histiocyte is a multisystemic infiltration by a special kind of macrophages which contain a ceroid material within its cytoplasm. We report herein a patient with mycosis fungoides, hyperlipidaemia type IIB and sea-blue histiocytes on bone marrow. Moreover, the cutaneous histopathology showed focus of eosinophilic spongiosis, that have not been previously described in mycosis fungoides, as far as we know.

We report two cases of Dowling-Degos' disease, one affecting the vulvovaginal semimucose, and one associated to a terminal malignant neoplasia. We remark the importance of this knowledge in order to distinguish it from malignant acanthosis nigricans or other patterns of melanosis or lentiginosis when located within mucose or semimucose, specially at the genitals. All cases associated to malignant neoplasia described are emphasized. However Dowling-Degos' disease is considered to be a nonparaneoplasic genodermatoses, this association should be taken into account.

A case of clinical and dermopathological characteristic cystic lymphangioma is reported. The atypical localization of the tumor and its delayed apparition were pointed out. A relation with any precipitating factor could not be established. Treatment was surgical remove.

A 45-years-old woman affected of Acute febrile neutrophilic syndrome is presented, with no reliable etiology. In a rutinary control, a pigmented ledion of one year of evolution was observed and a surgical excision was performed, with histological diagnosis of spreading superficial melanoma. In the next weeks of post-operatory, the Sweet's syndrome was decreased, disappearing completely two months later. No recurrences of Sweet's syndrome or malignant melanoma were observed after two years of follow-up. Association between Sweet's syndrome and neoplasias, in particular solid tumors, is commented, and the literature is reviewed.

The point is the relation between the tissue damage caused by UV radiations, the production of free radicals (lipoperoxidation) and the particular action of vitamin E on human skin. Through histopathologic changes and malondialdehyde dosification results, are analyzed, therefore a close relation between UV radiation, free radicals, lipoperoxidation, and tissue damage, is proved on human skin. Furthermore the protective action of topic vitamin E antioxidant which diminishes the lipoperoxidation and the tissue damage is apparent.

One effective treatment against sporotrichosis is the oral administration of potassium iodide (KI). It is not known how it works, and also it is not known if this substance has some effect on the microbicidal activity of polymorphonuclear neutrophils (PMN) and macrophages. In this work the phagocytic activity of gerbils treated with KI was studied. Gerbils cured within 62 days of treatment with KI, their PMN and macrophages showed an increased ability for reducing nitroblue-tetrazolium (NBT); myeloperoxidase activity was decreased in PMN. These results were the expected in any chronic infection and demonstrates that KI effectiveness on the experimental sporotrichosis works by an independent mechanism of phagocytosis.