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Two cases of cutaneous lymphadenoma: a histological and immunohistological study

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Author:
No author available
Journal Title:
CHINESE JOURNAL OF DERMATOLOGY
Issue:
7
DOI:
10.3760/cma.j.issn.0412-4030.2009.07.001
Key Word:
皮肤淋巴腺瘤;免疫组化;Cutaneous lymphadenoma;Histology,immunohistological

Abstract: The histological and immunohistological features of two cases of cutaneous lymphadenoma was studied. A single, erythematous nodule with smooth surface developed on the face of both patients. The lesion slowly progressed. Histology revealed irregular epithelial lobules in the dermis which showed a peripheral palisaded border of basaioid-like cells as well as a center composed of clear cells. Some epithelial lobules and surrounding stroma were infiltrated by numerous small lymphocytes. Immunohistological study showed that the lymphocytic infiltration was predominantly composed of T cells (CD3 positive) along with a small number of B cells (CD20 positive). Within epithelial lobules and surrounded stroma, there were numerous dendritic cells that were positive for S-100 and CDia but negative for cytokeratin 7, cytokeratin 20 or carcino-embryonic antigen. In the center of epithelial lobules in one case, a few cells positive for epithe-lial membrane antigen and CD30 was observed. The diagnosis of cutaneous lymphadenoma was made according to the pathological and immunohistochemical findings, and the infiltration was predominated by CD3-positive lymphocytes in this uncommon epithelial neoplasm.

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