Table 6. Patient characteristics and CT features at diagnosis of the complete resection of primary tumor.
| CT features | Complete resection (n=127) | Incomplete resection (n=11) | P value |
|---|---|---|---|
| Gender (male/female) | 62/65 | 8/3 | NS* |
| Myasthenia gravis (yes/no) | 17/110 | 1/10 | NS* |
| Age (mean value, years) | 54 | 55 | NS** |
| Size (mean value, cm) | |||
| X-axis diameter | 5.4 | 6.5 | NS** |
| Y-axis diameter | 3.7 | 3.8 | NS** |
| Z-axis diameter | 6.1 | 6.6 | NS** |
| Shape (round/lobulated/irregular) | 45/52/30 | 0/3/8 | 0.001* |
| Contour (smooth/partial smooth/unsmooth) | 38/77/12 | 0/5/6 | 0.000* |
| Internal density (homogeneous/heterogeneous) | 60/67 | 1/10 | 0.023* |
| Enhancement pattern (homogeneous/heterogeneous) | 36/91 | 0/11 | 0.031* |
| Calcification (yes/no) | 28/99 | 3/8 | NS* |
| Infiltration of surrounding fat (yes/no) | 87/40 | 11/0 | 0.033* |
| Invasion of mediastinal pleura (yes/no) | 67/60 | 10/1 | 0.023* |
| Invasion of lung (yes/no) | 29/98 | 8/3 | 0.001* |
| Invasion of pericardium (yes/no) | 23/104 | 10/1 | 0.000* |
| Invasion of venous system (yes/no) | 13/114 | 10/1 | 0.000* |
| Invasion of arterial system (yes/no) | 3/124 | 9/2 | 0.000* |
| Invasion of phrenic nerve or elevated hemidiaphragm (yes/no) | 9/118 | 7/4 | 0.000* |
| Invasion of sternum (yes/no) | 0/127 | 3/8 | 0.000* |
| Mediastinal lymph node enlargement (yes/no) | 1/126 | 1/10 | NS* |
NS, not significant; *, P values were calculated using the chi-square test or the Fisher exact test for categorical variables; **, P values were calculated using the One-Way ANOVA for continuous variables.