[Clinical Significance of Peripheral blood EB Virus Detection in NK/T Cell Lymphoma Patients].

To explore the clinical significance of peripheral blood EB virus detection in NK/T cell lymphoma patients.The positive rate of EB virus and EBV-DNA in 85 cases of NK/T cell lymphoma was assayed; the correlation of positive rate of EB virus with clinical staging, short-term and long-term prognosis was analyzed.The positive rate of EB virus in NK/T cell lymphoma was high (80.00%). The EBV-DNA copy number in peripheral blood leukocytes was higher than that in peripheral plasma (P 0.05). The I-II stages ratio of patients in EBV+ group was significantly lower than that in EBV- group. The CR rate and ORR in EBV+ group was significantly lower than those in EBV- group, the 3 year OS rate and 3 year DFR in EBV+ group also was significantly lower than those in EBV- group.The detection of periphera blood EBV may be used as an reference indicator for anxiliary diagnosis of NK/T cell lymphoma and evaluation of prognosis for patients, thus possessing a certain value for clinical application.