NCIt related terms : Stage IVB Lip and Oral Cavity Cancer;
NCIt definition : Stage IVB includes: (Any T, N3, M0); (T4b, Any N, M0). T4b: Tumor invades masticator
space, pterygoid plates, or skull base and/or encases the internal carotid artery.
N3: Metastasis in a lymph node larger than 6 cm in greatest dimension and ENE (-);
or in a single ipsilateral lymph node larger than 3 cm in greatest dimension and ENE(
); or metastases in multiple ipsilateral, contralateral or bilateral lymph nodes any
with ENE( ). M0: No distant metastasis. (AJCC 8th Ed.);