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Primary Cutaneous CD8+Small-to Medium-Sized Lymphoproliferative Disorder in Extrafacial Sites: Clinicopathologic Features and Concept on Their Classification

Publikace na Lékařská fakulta v Plzni |
2013

Tento text není v aktuálním jazyce dostupný. Zobrazuje se verze "en".Abstrakt

Three cases with CD8+ small- to medium-sized lymphoproliferations in the skin at extrafacial sites are described. Clinically, the patients presented with papulonodular or plaque-like lesions without preceding patches.

Histopathologically, nonepidermotropic nodular or diffuse infiltrates were composed of small-to medium-sized pleomorphic lymphocytes, which expressed CD8 (more than 80% of the cells) and granzyme B (60%-70% of the cells), but were negative for CD4, CD30, and CD56. There was no association with Epstein-Barr virus.

A clonal T-cell population was detected in 2 patients. Staging examinations did not reveal extracutaneous involvement.

The 2 patients with solitary lesions underwent complete remission after radiation therapy, whereas 1 patient developed multifocal lesions and several recurrences. These CD8+ small-to medium-sized lymphoproliferations of the skin at extrafacial sites may belong to a spectrum of phenotypically and prognostically heterogeneous cutaneous small-to medium-sized lymphoid proliferations, which are characterized by an indolent course in most patients.