Figure 5.

Combined dosimetric and clinicopathologic multivariable model for internal lymphedema depicting (A) a multivariable model incorporating only 1 dosimetric factor demonstrating increasing risk of internal lymphedema with advanced (Adv) adenopathy status at diagnosis and a radiation dose to the larynx V45 ≥50% and (B) a multivariable model incorporating 2 dosimetric factors depicting increasing risk of internal lymphedema with a radiation dose to the larynx V45 ≥50% and a maximum (Max) radiation dose to the ipsilateral level IVA ≥60 Gy.