Hypopharyngeal cancer trends in a high-incidence region: A retrospective tertiary single center study

Table 6 American Joint Committee on Cancer and tumor, node, metastasis staging of the cases

AJCC stage	TNM stage	Cases	Percentage
Stage 0	Tis N0 M0	0	0
Stage I	T1 N0 M0	0	0
Stage II	T2 N0 M0	0	0
Stage III	T3 N3 M0; T1-3 N1 M0	5	9.43%
Stage IV A	T4a N0/1 M0; T1-4a N2 M0	30	56.60%
Stage IV B	T4b any N M0; any T N3 M0	14	26.41%
Stage IV C	Any T any N M1	4	7.54%

AJCC: American Joint Committee on Cancer; TNM: Tumor, node, metastasis.