nodes Paratracheal lymph nodes Precricoid (Delphian) lymph nodeStaging of Neck Nodes N X : Regional ... NECK DISSECTIONCervical lymph node in level I-VLevel I Submental triangle (Ia) Anterior digastric Hyoid ... Selective Neck Dissection Remove high risk lymph node groups based on tumor site Supraomohyoid Levels