目的 总结结外鼻型NK/T细胞淋巴瘤的临床病理组织学特征.方法 回顾性分析21例结外鼻型NK/T细胞淋巴瘤的临床表现、病理组织学特点,采用免疫组化SP法检测结外鼻型NK/T细胞淋巴瘤免疫表型、病毒EBV等表达情况.结果 镜下21例均有不同程度的毛细血管增生,18例可见明确的肿瘤细胞以血管为中心呈破坏性浸润,表现为肿瘤细胞在血管内膜下及管壁内浸润,多种炎症细胞混合浸润,1例可见鳞状上皮假瘤样增生,21例的肿瘤细胞均为T细胞分化抗原CD45RO(+),NK细胞相关抗原CD56(+),T细胞颗粒相关抗原TIA-1(+),EBV(+).结论 结外鼻型NK/T细胞淋巴瘤有特征性临床、病理学改变,根据典型的临床表现、病理形态学改变、免疫表型特点及EBV原位杂交阳性可作出准确诊断.%Objective To summarize the clinical histopatholngical characteristics of extranodal na-sal-type natural killer cell / T cell lymphoma. Methods 21 cases of nasal-type extranodal natural killer cell / T cell lymphoma were studied by retrospective analysis on its connection with their clinical manifesta-tions and histopathological features. Immunohietochemical SP method was used to detect the expression of immunophenotype, virus( EBV), and etc, in 21 cases. Results Capillaries had varied degrees hyperplasi-a in all cases under the microscope. Tumor cells showed definite devastating infiltration around the blood vessels, its infiltrating representation was found below intima and among vessel wall, and multiple mixed in-flammatory cells were found in it as well. Squamous epithelial pseudotumor-like proliferating can be seen in 1 case. All tumor cells'immnnophenotype were T-cell differentiation antigen CD45RO( + ), T-cell related antigen CD56 (+), T-cell particle-associated antigen TIA-1 (+), EBV (+). Conclusion Nasal-type extranodal natural killer cell / T cell lymphoma has characteristic clinical expression and histopathological changes. Accurate diagnosis can be obtained on the basis of its typical clinical expression, pathomorphology changes, immunophenotype and EBV( + ) in situ hybridization.
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