%0 Journal Article %T Hiding in Plain Sight: Retropharyngeal Lymph Node Metastasis. %A Roof SA %A Sindhu KK %J Int J Radiat Oncol Biol Phys %V 120 %N 1 %D 2024 Sep 1 %M 39147431 %F 8.013 %R 10.1016/j.ijrobp.2024.04.022