TABLE 1: Seventh Edition of the TNM Classification of Lung Cancer Compared With the Sixth Edition
Note—Cells in bold indicate a change in the designation from the sixth edition. NA indicates not applicable.
a T designation is listed for tumors completely surrounded by lung. Designation can increase depending on presence and extent of invasion.
b T 2a designation if tumor measures 5 cm in long-axis diameter.
c T 2b designation if tumor measures > 5 cm but 7 cm in long-axis diameter.
d Survival based on patients staged pathologically with complete resection of tumor (R0) and no nodal or extranodal metastatic disease (N0M0).
e Individual survival statistics not calculated due to limited information. As a group, 5-year survival rate in patients pathologically staged with a T3 and T4 designation (excluding those with tumors > 7 cm or satellite nodules), any R, any N, and M0 was 31% and 22%, respectively.
f Survival based on patients staged pathologically with complete or incomplete resection of tumor (any R), any nodal disease (any N), and M0.
g Survival based on patients staged pathologically with any tumor designation (any T) and M0.
h Survival based on patients staged clinically with any T and any N.