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COMPARATIVE STUDY
JOURNAL ARTICLE
Comparative analysis of histological and immunohistological features in mycosis fungoides and Sézary syndrome.
Journal of Cutaneous Pathology 1998 September
Mycosis fungoides (MF) and Sézary syndrome (SS) are closely related cutaneous T-cell lymphomas, which differ in several clinical aspects. We compared histological and immunophenotypical features of these two entities, which could be implicated in the dermotropism and epidermotropism, characteristic for both of them. Thirteen biopsy specimens from patients with established plaque-stage MF and 13 from SS patients were examined retrospectively, and 21 histological criteria were assessed. Further, 9 cryosections from MF lesions and 9 from SS lesions were stained for LFA, ICAM1, CD40, CD40-ligand, CD28, CD80, CTLA-4, CD86, FAS, FAS-ligand, CLA and CD15s. The only histological criteria that showed persistent differences were acanthosis (in 12 of 13 SS and in 7 of 13 MF specimens) and Pautrier collections (detected in 6 SS and 11 MF biopsies). Patterns of staining with the antibodies mentioned above were found to be similar. Our results indicate that these interaction molecules seem to be involved in the pathogenesis of MF and SS, but their immunohistochemical distribution does not contribute to the differentiation between the two entities.
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