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Cutaneous T-cell immunoblastic sarcoma1

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Abstract

We describe a rare malignant neoplasm, cutaneous T-cell immunoblastic sarcoma (IBS-T). Clinical examination revealed multiple 3–6 mm salmon-pink papules. On biopsy, these papules contained perivascular dermal infiltrates with atypical mononuclear cells, characterized by immunohistochemistry and electron microscopy as T lymphocytes with phenotype T3+, T11+, Ia+ and B1-,κ-,λ-, which exhibited focal epidermotropism.


 

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