Fig. 2From: Tumor volume is more reliable to predict nodal metastasis in non-small cell lung cancer of 3.0 cm or less in the greatest tumor diameterThe exponential growth model curve between GTD and TV. The relationship between GTD (cm) and TV (cm3) is in accordance with the exponential growth model: y = 0.113e1.455x (y = TV, x = GTD)Back to article page