Diagnostic value of endoscopic ultrasound in staging of pancreatic cancer

Table 1 Pancreatic cancer tumor node metastases staging criteria

Stage
T1	Tumor ≤ 2 cm in greatest dimension
T1a	Tumor ≤ 0.5 cm in greatest dimension
T1b	Tumor > 0.5 and < 1 cm in greatest dimension
T1c	Tumor 1 to 2 cm in greatest dimension
T2	Tumor > 2 and ≤ 4 cm in greatest dimension
T3	Tumor > 4 cm in greatest dimension
T4	Tumor involves the celiac axis, superior mesenteric artery, and/or common hepatic artery
N1	Metastasis in one to three regional lymph nodes
N2	Metastasis in four or more regional lymph nodes
M0	No distant metastasis
M1	Distant metastasis

Table 2 Prognostic staging groups 8^th edition

T	N	M	Stage
T1	N0	M0	IA
T2	N0	M0	IB
T3	N0	M0	IIA
T1-3	N1	M0	IIB
T1-3	N2	M0	III
T4	Any N	M0	III
Any T	Any N	M1	IV