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Fig. 2 | BMC Cancer

Fig. 2

From: Identifying optimal candidates for local treatment of the primary tumor among patients with de novo metastatic nasopharyngeal carcinoma: a retrospective cohort study based on Epstein–Barr virus DNA level and tumor response to palliative chemotherapy

Fig. 2

Kaplan–Meier OS curves in 502 patients with de novo metastatic NPC (a) Patients grouped according to EBV DNA level after PCT. b Patients grouped according to tumor response after PCT. c Patients grouped according to risk stratification

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