Table 2. Characteristics of ground glass nodules of the study cohort.
| Characteristics | GGNs (n =115) | Growth group (n=24) | Non-growth group (n=91) | P value of t-test |
|---|---|---|---|---|
| Initial CT value (HU) | −436 (−943 to −197) | −386±66 | −476±79 | <0.001 |
| Initial diameter (mm) | 10.9 (3.0 to 29.8) | 11.9±5.5 | 9.8±4.8 | <0.01 |
| Initial volume (mm3) | 394.0 (27.0 to 7,531.1) | 447.0±274.5 | 394.0±245.1 | <0.001 |
| Initial mass (mg) | 62.6 (5.2 to 5,129.3) | 95.6±146 | 85.6±115 | <0.01 |
| VDT (days) | 1,743 (−40 to 2,305) | 763±548 | 1,805±316 | <0.001 |
| Consolidation volume | 100.86 (0 to 695.4) | 127.84±87.3 | 89.43±74.3 | <0.01 |
| Initial CTR (%) | 25.6 (0.0 to 83.8) | 28.6±23.4 | 22.7±18.6 | <0.01 |
GGN, ground glass nodule; CT, computed tomography; VDT, volume doubling time; CTR, consolidation-to-tumor ratio.