Table 5. Definitions of TNM Stage IIIa
| Stage | TNM | Description | Illustration |
| aReprinted with permission from AJCC: Exocrine and endocrine pancreas. In: Edge SB, Byrd DR, Compton CC, et al., eds.: AJCC Cancer Staging Manual. 7th ed. New York, NY: Springer, 2010, pp 241-9. |
| III | T4, Any N, M0 | T4 = Tumor involves the celiac axis or the superior mesenteric artery (unresectable primary tumor). | |
| NX = Regional lymph nodes cannot be assessed. |
| N0 = No regional lymph node metastasis. |
| N1 = Regional lymph node metastasis. |
| M0 = No distant metastasis. |