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In human skin, the CD34 antigen is expressed on endothelium, periadnexal cells, and a population of reticular dermal interstitial cells. CD34 expression is characteristic of dermatofibrosarcoma protuberans and several other neoplasms, but not of typical fibrous papules of the nose. We describe a 16-year-old white girl with a slowly growing papule on the nose. Histopathology showed a dermal tumor with...
The different types of Epidermolysis Bullosa (EB) are histologically characterized by blistering without inflammatory cells. This paper reports five cases of EB with eosinophilic infiltrates, and hypothesizes on a possible role of mast cells in the genesis of these cases.Mast cells were detected and counted after giemsa and esterases stains. The numbers of mast cells in the cases with eosinophils,...
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