Table 1 Definitions of AJCC TNM System
TNM 7th | TNM 8th |
|---|---|
Tis carcinoma in situ | Tis carcinoma in situ |
T1 tumor limited to the pancreas, 2 cm or less in greatest dimension | T1 tumor ≤ 2 cm in greatest dimension |
T2 tumor limited to the pancreas, more than 2 cm in greatest dimension | T2 tumor > 2 cm and ≤ 4 cm in greatest dimension |
T3 tumor extends beyond the pancreas but without involvement of the celiac axis or the superior mesenteric artery | T3 tumor > 4 cm in greatest dimension |
T4 tumor involves the celiac axis or the superior mesenteric artery (unresectable primary tumor) | T4 tumor involves celiac axis, superior mesenteric artery, and/or common hepatic artery, regardless of size |
N0 to regional lymph node metastasis | N0 to regional lymph node metastases |
N1 regional lymph node metastasis | N1 metastasis in one to three regional lymph nodes |
N2 metastasis in four or more regional lymph nodes | |
M0 no distant metastasis | M0 mo distant metastasis |
M1 distant metastasis | M1 distant metastasis |
AJCC 7th | AJCC 8th | AJCC modified |
|---|---|---|
Stage 0 Tis N0 M0 | Stage 0 Tis N0 M0 | Stage 0 Tis N0 M0 |
Stage IA T1 N0 M0 | Stage IA T1 N0 M0 | Stage IA T1 N0 M0 |
Stage IB T2 N0 M0 | Stage IB T2 N0 M0 | Stage IB T2–3 N0 M0 |
Stage IIA T3 N0 M0 | Stage IIA T3 N0 M0 | Stage IIA T1–3 N1 M0 |
Stage IIB T1-3 N1 M0 | Stage IIB T1-3 N1 M0 | Stage IIB T1-3 N2 M0 |
Stage III T4 Nany M0 | Stage III Tany N2 M0, T4 Nany M0 | Stage III T4 Nany M0 |
Stage IV Tany Nany M1 | Stage IV Tany Nany M1 | Stage IV Tany Nany M1 |