Skin and subcutaneous tissue are the most common location of benign and malignant vascular tumors. The benign or malignant nature of the lesion may not always be identified clinically because of the varying presentations. The histology of the lesion, especially in malignancies may not exhibit definite vascular pattern. In such cases, clinical presentation has to be correlated with histopathological picture as well as immunohistochemical characteristics to reach a specific diagnosis. Judicious use of immunohistochemical markers proves to be invaluable. Two rare cases of cutaneous vascular tumors which presented at our institution are cited, the diagnosis of which involved correlation of these modalities.
Background: Pityriasis versicolor is a superficial infection of the skin caused by the yeast of Malassezia sp. genus. Although the disease has been described at the beginning of the 19th century, classification of its etiological agent was a matter of debate. There is only scanty information about the epidemiology and ecology of Malassezia species available and the clinical significance of the species is not completely recognized. Aims: To evaluate the clinical & epidemiological pattern and to isolate different species of Malassezia. Also to assess the correlation between a particular species and different colors of the lesion. Results: In this study young people of both sex are most commonly affected. Most of the lesion are hypo-pigmented and affect the upper part of the body. A few flexural lesions are also seen. M. dermatis is the most commonly isolated species. No significant association with the color of the lesion and a species was found. Limitation: Small sample size and difficulty to maintain the culture are two major limitations of this study.
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