Epstein-Barr virus-positive plasmacytoma in immunocompetent patients

被引:33
作者
Loghavi, Sanam [1 ,2 ]
Khoury, Joseph D. [1 ,2 ]
Medeiros, L. Jeffrey [1 ,2 ]
机构
[1] Univ Texas, Dept Hematopathol, MD Anderson Canc Ctr, Houston, TX USA
[2] Univ Texas MD Anderson Canc Ctr, Dept Hematopathol, Houston, TX 77030 USA
关键词
CD8-positive T cells; Epstein-Barr virus; plasmablastic lymphoma; plasmacytoma; HIV-INFECTED PATIENTS; B-CELL LYMPHOMA; CD8(+) T-CELLS; PLASMABLASTIC LYMPHOMA; LYMPHOPROLIFERATIVE DISORDERS; EXTRAMEDULLARY PLASMACYTOMA; GASTRIC CARCINOMAS; IMMUNE-RESPONSE; ORAL-CAVITY; GUIDELINES;
D O I
10.1111/his.12640
中图分类号
Q2 [细胞生物学];
学科分类号
071009 ; 090102 ;
摘要
AimsExtramedullary plasmacytomas are often localized, clinically indolent neoplasms, and affected patients usually respond to radiation therapy or limited cycles of chemotherapy. In contrast, plasmablastic lymphomas are clinically aggressive neoplasms composed of immunoblastic or plasmablastic cells and associated with more mature plasma cells in some cases. Patients with plasmablastic lymphoma usually have a poor prognosis despite aggressive chemotherapy. Evidence of Epstein-Barr virus (EBV) infection is uncommon in plasmacytoma, but common in plasmablastic lymphoma, and is therefore helpful in differential diagnosis. The aim of this study is to describe four cases of plasmacytoma arising in immunocompetent individuals that were diffusely positive for Epstein-Barr virus-encoded small RNA as shown by in-situ hybridization. Methods and resultsWe describe the clinicopathological and immunophenotypic findings of four EBV-positive plasmacytomas arising in immunocompetent patients. These tumours were characterized by diffuse proliferation of mature-appearing plasma cells intermixed with a briskly reactive, CD8-positive, TIA-1-positive cytotoxic T-cell infiltrate. Long-term follow-up was available for all patients, and all were alive and free of disease at last follow-up (median 43.4months). ConclusionsWe suggest the term EBV-positive plasmacytoma in immunocompetent patients for these lesions. It is essential to distinguish these tumours from plasmablastic lymphoma, as the latter diagnosis is associated with a much poorer prog-nosis, and patients require much more aggressive therapy.
引用
收藏
页码:225 / 234
页数:10
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