T- and T/natural killer-cell lymphomas of the salivary gland: A clinicopathologic, immunohistochemical and molecular study of six cases

被引:32
|
作者
Chan, JKC
Tsang, WYW
Hui, PK
Ng, CS
Sin, VC
Khan, SM
Siu, LLP
机构
[1] KWONG WAH HOSP,DEPT PATHOL,KOWLOON,HONG KONG
[2] CARITAS MED CTR,DEPT PATHOL,KOWLOON,HONG KONG
[3] QUEEN ELIZABETH HOSP,DEPT RADIOTHERAPY & ONCOL,KOWLOON,HONG KONG
[4] ST MARYS HOSP,DEPT PATHOL,NEWPORT,SHROPS,ENGLAND
关键词
non-Hodgkin's lymphoma; T-cell lymphoma; T/natural killer lymphoma; natural killer cell; CD56; salivary gland tumor; Epstein-Barr virus;
D O I
10.1016/S0046-8177(97)90113-1
中图分类号
R36 [病理学];
学科分类号
100104 ;
摘要
Primary salivary gland lymphomas are almost always of B lineage, with most being represented by low grade B-cell lymphoma of mucosa-associated lymphoid tissue. This study characterizes the rare non-B-cell lymphomas of the salivary gland based on an analysis of six cases. All patients were men, with a mean age of 53.5 years. They presented with submandibular or parotid mass, which on histological examination showed extensive interstitial infiltration by small, medium-sized, or large lymphoid cells. There was prominent invasion and expansion of the ducts and acini in five cases. Angioinvasion was evident in two cases. Three cases were of T lineage and were CD56 negative; one of these cases expressed CD30. Three cases showed an immunophenotype of CD2+ CD3(f)- CD3(p)+ CD56+, consistent with T/natural killer (NK) cell lymphoma. In situ hybridization for Epstein-Barr virus (EBV)-encoded early nuclear RNA (EBER) showed positive reaction exclusively in the three CD56+ cases. Clonal T-cell populations were shown in two CD56-negative cases by polymerase chain reaction on paraffin sections using primers for the T-cell-receptor (TCR) gamma-chain gene, but not in the other four cases (the three CD56+ cases and one CD56- case). Four patients (two CD56+ and two CD56-) died within 3 years, and two were disease free at 4 and 1.5 years, respectively. This study shows that salivary gland T- or T/NK-cell lymphomas cannot be reliably distinguished from B-cell lymphomas; on morphological grounds alone, because both can show prominent lymphoepithelial lesions. It appears that T/NK-cell lymphomas, which are often extranodal in localization and strongly associated with Epstein-Barr virus (EBV), show a predilection to involve the salivary glands as well. Copyright (C) 1997 by W.B. Saunders Company.
引用
收藏
页码:238 / 245
页数:8
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