Fig. 2From: Effects of dosimetric inadequacy on local control and toxicities in the patients with T4 nasopharyngeal carcinoma extending into the intracranial space and treated with intensity-modulated radiotherapy plus chemotherapyEffect of different intracranial extension levels on local failure-free survival. Kaplan–Meier curves compared with log-rank test showed no significant differences in terms of local failure-free survival among T4 nasopharyngeal carcinoma patients with mild, medium, and deep involvementBack to article page