*Parapharyngeal extension denotes postero-lateral infiltration of tumour beyond the pharyngobasilar fascia. ** The regional lymph nodes are the cervical nodes. *** Midline nodes are considered ipsilateral nodes. # Supraclavicular fossa is the triangular region defined by 3 points: the superior margin of the sternal end of the clavicle, the superior margin of the lateral end of the clavicle, the point where the neck meets the shoulder. This includes caudal portions of Levels IV and V.
2 A help desk for specific questions about the TNM classification is available at www.uicc.org/index.php?id=508 .
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