Fig. 11
From: A probabilistic model of bilateral lymphatic spread in head and neck cancer

Six selected scenarios of possible patients presenting with HNSCC. In the top row, clearly lateralized early T-category (T1/2) tumors are shown, while the bottom row depicts patients with an advanced T-category tumor that does cross the mid-sagittal plane (which is drawn exemplarily in the bottom left instance). For each head schematic, the left side represents the contra- and the right side the ipsilateral neck. LNLs are shaded in red when they are clinically involved and orange, when the model suggests (based on a 5% threshold) elective irradiation despite being diagnosed as clinically healthy.