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Histopathologic features of primary cutaneous anaplastic large cell lymphoma. (A) Sheets of large lymphoma cells with extensive dermal and subcutaneous tissue involvement with no epidermotropism. (B) Angiocentric distribution may be seen in some cases and mimic other angiotropic lymphomas (see text). (C) Sheets of large atypical lymphoid cells with prominent nucleoli replacing the dermis. An eccrine duct (center) is seen surrounded by tumor cells.
