Table 3. Definitions of TNM Stage 0a
| Stage | TNM | Description |
| aReprinted with permission from AJCC: Lung. In: Edge SB, Byrd DR, Compton CC, et al., eds.: AJCC Cancer Staging Manual. 7th ed. New York, NY: Springer, 2010, pp 253-70. | ||
| 0 | Tis, N0, M0 | Tis = Carcinoma in situ. |
| N0 = No regional lymph node metastasis. | ||
| M0 = No distant metastasis. | ||
