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Cutaneous Peripheral T-Cell Lymphoma Associated With a Proliferation of B Cells
Cutaneous Peripheral T-Cell Lymphoma Associated With a Proliferation of B Cells AMERICAN JOURNAL OF CLINICAL PATHOLOGY Mattoch, I. W., Fulton, R., Kim, Y., Hoppe, R., Warnke, R. A., Sundram, U. N. 2009; 131 (6): 810-819Abstract
Although the new World Health Organization-European Organization for Research and Treatment of Cancer classification focuses on providing uniformity in the diagnosis of cutaneous lymphomas, cutaneous peripheral T-cell lymphoma (PTL) remains a poorly defined subgroup. As follow-up to a study of systemic PTL complicated by a proliferation of B cells, we studied 16 cases of cutaneous PTL that contained morphologically atypical T cells associated with a significant infiltrate of B cells (about 20%-50%). A clonal T-cell receptor gamma chain gene rearrangement was present in all cases. In contrast, a clonal immunoglobulin heavy chain gene rearrangement was present in only 1 case. Clinical staging in 14 cases identified systemic involvement in 2. At last follow-up, both patients with systemic involvement had died of disease, and the majority of patients with primary cutaneous disease were alive (11/12). The presence of numerous atypical B cells and T cells caused diagnostic confusion in these cases. Comprehensive pathologic studies, coupled with clinical staging, are necessary for the accurate diagnosis of this unusual manifestation of cutaneous PTL.
View details for DOI 10.1309/AJCP5W0VOCSVOBRA
View details for Web of Science ID 000266238600010
View details for PubMedID 19461087