Patient dosimetric characteristics.

<p>LV-IMRT, large-target-volume intensity-modulated radiotherapy; RV-IMRT, reduced-target-volume intensity-modulated radiotherapy; SEM., standard error mean</p><p>*, Statistical significance.</p><p>Patient dosimetric characteristics.</p

Impact of the prognostic factors on the treatment results based on multivariate Cox regression analysis.

<p>LV-IMRT, large-target-volume intensity-modulated radiotherapy; RV-IMRT, reduced-target-volume intensity-modulated radiotherapy; OS, overall survival; PFS, progression-free survival; DMFS, distant metastasis-free survival; LRFFS, locoregional recurrence-free survival; RR, relative risk; CI, confidence interval;</p><p>*, Statistical significance.</p><p>Impact of the prognostic factors on the treatment results based on multivariate Cox regression analysis.</p

Failure patterns after radiotherapy.

<p>LV-IMRT, large-target-volume intensity-modulated radiotherapy; RV-IMRT, reduced-target-volume intensity-modulated radiotherapy; Sig., significance</p><p>*, Statistical significance.</p><p>Failure patterns after radiotherapy.</p

Radiation toxicity profiles.

<p>LV-IMRT, large-target-volume intensity-modulated radiotherapy; RV-IMRT, reduced-target-volume intensity-modulated radiotherapy; Sig., significance</p><p>*, Statistical significance.</p><p>Radiation toxicity profiles.</p

Patient clinical characteristics.

<p>LV-IMRT, large-target-volume intensity-modulated radiotherapy; RV-IMRT, reduced-target-volume intensity-modulated radiotherapy; SEM., standard error mean; *, Statistical significance.</p><p>Patient clinical characteristics.</p

Kaplan-Meier curves illustrate the survival of two-group patients who underwent radiotherapy.

<p>Large-target-volume intensity-modulated radiotherapy [red line] and reduced-target-volume intensity-modulated radiotherapy [blue line]), including (A) overall survival, (B) progression-free survival, (C) distant metastasis-free survival, (D) locoregional recurrence-free survival, (E) local recurrence-free survival, (F) regional recurrence-free survival.</p