8/9/2019 H&N Staging

1/9

8/9/2019 H&N Staging

2/9

4b determinants: Skull base (except NPC), ICA, prevertebral, pterygid plates, mediastinum, masticatr space (trismus);Paraglttic space: t+e space n eac+ side t+e glttis bunded laterally by inerir part t+e t+yrid cartilage and t+e crict+yrid membrane and psterirly by t+e mucus membrane t+e pyrirm sinus< antersuperirly it extends int t+e preepiglttic space

;Preepiglttic space: t+e space anterir t t+e epiglttis t+at is bunded anterirly by t+e t+yr+yid membrane and t+e superir parts t+e lamina t+e t+yrid cartilage, superirly by t+e +yepiglttic ligament and inerirly by t+e t+yrepiglttic ligament