Table 1.
AJCC staging for PDAC
| Stage 0 | Tis | N0 | M0 |
|---|---|---|---|
| Stage IA | T1 | N0 | M0 |
| Stage IB | T2 | N0 | M0 |
| Stage IIA | T3 | N0 | M0 |
| Stage IIB | T1, T2, T3 | N1 | M0 |
| Stage III | T1, T2, T3, T4 | N2 | M0 |
| Any | M0 | ||
| Stage IV | Any | Any | M1 |
| T | Primary Tumor | ||
| TX | Primary tumor cannot be assessed | ||
| T0 | No evidence of primary tumor | ||
| Tis | Carcinoma in situ, including: High-grade pancreatic intraepithelial neoplasia Intraductal papillary mucinous neoplasm with high-grade dysplasia Intraductal tubulopapillary neoplasm with high-grade dysplasia Mucinous cystic neoplasm with high-grade dysplasia |
||
| T1 | Largest tumor diameter < 2 cm | ||
| T1a | Largest tumor diameter ≤ 0.5 cm | ||
| T1b | Largest tumor diameter > 0.5 cm and < 1 cm | ||
| T1c | Largest tumor diameter 1-2 cm | ||
| T2 | Largest tumor diameter > 2 cm and ≤ 4 cm | ||
| T3 | Largest tumor diameter > 4 cm | ||
| T4 | Tumor involves the celiac axis, superior mesenteric artery, and/or common hepatic artery, regardless of size | ||
| N | Regional Lymph Nodes | ||
| Nx | Regional lymph nodes cannot be assessed | ||
| N0 | No regional lymph node metastasis | ||
| N1 | Metastasis in 1-3 regional lymph nodes | ||
| N2 | Metastasis in ≥ 4 regional lymph nodes | ||
| M | Distant Metastasis | ||
| M0 | No distant metastasis | ||
| M1 | Distant Metastasis | ||