From: Adult Primary Liver Cancer Treatment (PDQ®)
PDQ Cancer Information Summaries [Internet].
Bethesda (MD): National Cancer Institute (US); 2002-.
NCBI Bookshelf. A service of the National Library of Medicine, National Institutes of Health.
Table 1. Definitions of TNM Stages IA and IBa
| Stage | TNM | Description |
|---|---|---|
| IA | T1a, N0, M0 | T1a = Solitary tumor ≤2 cm. |
| N0 = No regional lymph node metastasis. | ||
| M0 = No distant metastasis. | ||
| IB | T1b, N0, M0 | T1b = Solitary tumor >2 cm without vascular invasion. |
| N0 = No regional lymph node metastasis. | ||
| M0 = No distant metastasis. |
Tumor = primary tumor; N = regional lymph nodes; M = distant metastasis.
aReprinted with permission from AJCC: Liver. In: Amin MB, Edge SB, Greene FL, et al., eds.: AJCC Cancer Staging Manual. 8th ed. New York, NY: Springer, 2017, pp. 287–93.