Table 2.
Comparing elastic modulus with clinicopthological factors
| Characteristics | n (%) | Stiffness (kPa) | P-value | ||
|---|---|---|---|---|---|
| Median | Min | Max | |||
| Size of the tumor (mm) | |||||
| <42 mm | 62 (58.5) | 5.17 | 1.08 | 31.8 | <0.0001 |
| ≧42 mm | 44 (41.5) | 11.4 | 3.27 | 68.0 | |
| Lymphatic invasion | |||||
| Negative | 46 (43.4) | 5.77 | 1.41 | 47.8 | 0.1206 |
| Positive | 60 (56.6) | 8.48 | 1.08 | 68.0 | |
| Venous invasion | |||||
| Negative | 29 (27.4) | 5.61 | 1.08 | 37.3 | 0.0116 |
| Positive | 77 (72.6) | 8.89 | 1.91 | 68.0 | |
| Perineural invasion | |||||
| Negative | 76 (71.7) | 5.97 | 1.08 | 43.2 | 0.0088 |
| Positive | 30 (28.3) | 12.1 | 1.41 | 68.0 | |
| Tumor budding | |||||
| Negative | 49 (46.2) | 7.11 | 1.08 | 43.2 | 0.2871 |
| Positive | 57 (53.8) | 7.69 | 1.91 | 68.0 | |
| Poorly differentiated clusters | |||||
| Negative | 52 (49.1) | 5.67 | 1.08 | 43.2 | 0.0050 |
| Positive | 54 (50.9) | 9.19 | 1.91 | 68.0 | |
| Elastic laminal invasion | |||||
| No | 42 (62.7) | 5.71 | 1.08 | 37.5 | <0.0001 |
| Yes | 25 (37.3) | 13.6 | 5.58 | 47.8 | |
| Serum carcinoembryonic antigen (ng/mL) | |||||
| <5.0 | 57 (53.8) | 5.81 | 1.47 | 36.5 | 0.0090 |
| ≧5.0 | 49 (46.2) | 9.23 | 1.08 | 68.0 | |
| Serum carcinoma 19-9 (U/mL) | |||||
| <37.0 | 76 (71.7) | 7.08 | 1.08 | 36.5 | 0.0688 |
| ≧37.0 | 30 (28.3) | 10.8 | 3.06 | 68.0 | |
| Obstructive Tumor | |||||
| No | 83 (78.3) | 5.81 | 1.08 | 43.2 | <0.0001 |
| Yes | 23 (21.7) | 13.8 | 4.61 | 68.0 | |