Pancreatic neuroendocrine tumors: A review of serum biomarkers, staging, and management

Table 3 Definitions of American Joint Committee on Cancer, European Neuroendocrine Tumor Society, and modified European Neuroendocrine Tumor Society staging for pancreatic neuroendocrine tumors

	AJCC 7th staging classification			AJCC 8th and ENETS staging classification			mENETS
Stage	T	N	M	T	N	M	T	N	M
IA	T1	N0	M0	T1	N0	M0	T1	N0	M0
IB	T2	N0	M0	T2	N0	M0	T2	N0	M0
IIA	T3	N0	M0	T3	N0	M0	T3	N0	M0
IIB	T1-3	N1	M0	T4	N0	M0	T1-3	N1	M0
III	T4	Any N	M0	Any T	N1	M0	T4	Any N	M0
IV	Any T	Any N	M1	Any T	Any N	M1	Any T	Any N	M1

AJCC: American Joint Committee on Cancer; ENETS: European Neuroendocrine Tumor Society; mENETS: Modified European Neuroendocrine Tumor Society.