Figure 3 | Scientific Reports

Figure 3

From: Prognostic value of parotid lymph node metastasis in patients with nasopharyngeal carcinoma receiving intensity-modulated radiotherapy

Figure 3

(A) Progression-free survival, (B) overall survival, (C) distant metastasis-free survival and (D) regional relapse-free survival curves for patients with NPC stratified by N-category (as defined by the 7th UICC/AJCC system) and parotid lymph node (PLN) involvement. The 11 patients whose involved PLNs were not irradiated were excluded.

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