Table 4 Relation between data analysis of the histogram and follow-up behavior of the segmented neoplastic and non-neoplastic pulmonary nodules
Diagnosis | P-value | ||||
|---|---|---|---|---|---|
Benign | Malignant | ||||
Count | % | Count | % | ||
Visual assessment of the CT histogram | |||||
α type | 14 | 58.3% | 20 | 41.7% | 0.182 |
β type | 10 | 41.7% | 28 | 58.3% | 0.182 |
Skewness | |||||
Negative to the left | 12 | 50.0% | 29 | 60.4% | 0.400 |
Symmetrical (0) | 6 | 25.0% | 15 | 31.3% | 0.582 |
Positive to the right | 6 | 25.0% | 4 | 8.3% | 0.074 |
Kurtosis | |||||
Negative | 5 | 20.8% | 9 | 18.8% | 1 |
0 | 6 | 25.0% | 18 | 37.5% | 0.289 |
Positive | 13 | 54.2% | 21 | 43.8% | 0.404 |
Number of peaks | |||||
0 | 4 | 16.7% | 2 | 4.2% | 0.146 |
1 | 5 | 20.8% | 5 | 10.4% | |
2 | 10 | 41.7% | 27 | 56.3% | |
3 | 5 | 20.8% | 14 | 29.2% | |
Behavior after follow-up | |||||
Stationary | 1 | 4.2% | 3 | 6.3% | < 0.001** |
Progressive | 0 | 0.0% | 42 | 87.5% | |
Regressive | 23 | 95.8% | 3 | 6.3% | |