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Figure 2 | BMC Cancer

Figure 2

From: Nasopharyngeal carcinoma with paranasal sinus invasion: the prognostic significance and the evidence-based study basis of its T-staging category according to the AJCC staging system

Figure 2

Survival curves of patients with NPC and different paranasal sinus invasion. The graph shows (A) the overall survival probability, (B) the distant metastasis-free survival probability, and (C) the local relapse-free survival probability for patients with sphenoid sinus invasion alone and patients with maxillary sinus and ethmoid sinus invasion. Group 1 and Group 2 represent patients with NPC with sphenoid sinus invasion alone and with maxillary sinus and ethmoid sinus invasion, respectively.

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