Localized and disseminated pagetoid reticulosis. Diagnostic immunophenotypical findings.
1989; National Institutes of Health; Volume: 125; Issue: 3 Linguagem: Inglês
Autores
Volker Mielke, Helmut H. Wolff, M. Winzer, Wolfram Sterry,
Tópico(s)Lymphoma Diagnosis and Treatment
ResumoPagetoid reticulosis (PaRet) is a rare skin disease with an intraepidermal infiltrate of atypical lymphocytes. We performed phenotypic studies on two patients with classic localized PaRet (Woringer-Kolopp disease) and one patient with the disseminated type (Ketron-Goodman disease) and compared these with all published reports of cases; both variants show intraepidermal, highly activated, proliferating T cells with variable loss of pan-T-cell antigens, contrasting with nonactivated dermal reactive T cells. This pattern is unique among cutaneous lymphomas and can be used for diagnosis. Despite the fact that localized PaRet does not show a malignant course, recent genotypic analysis of one patient showed monoclonality. Comparable constellations are found in other diseases like lymphomatoid papulosis, which also represent monoclonal disorders of activated T cells with a benign course. To unify these seeming discrepancies, we introduce the concept of "benign cutaneous lymphomas."
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