Table 3.
Misclassification rates by subgroups in univariate analysis
| Correct grading (%) | Under grading (%) | Over grading (%) | P | |
|---|---|---|---|---|
| Type of tumor | ||||
| Nonfunctioning (n=85) | 74.1 | 11.8 | 14.1 | 0.9 |
| Functioning (n=27) | 74.1 | 14.8 | 11.1 | |
| EUS-elastography | ||||
| Rigid (n=57) | 75.4 | 15.8 | 8.8 | 0.79 |
| Soft (n=36) | 77.8 | 8.3 | 13.9 | |
| EUS-contrast enhancement | ||||
| Hyper-enhancement (n=54) | 76.0 | 12.9 | 11.1 | 0.12 |
| Iso/hypo-enhancement (n=16) | 56.3 | 12.5 | 31.2 | |
| Necrosis at final histology | ||||
| No (n=102) | 73.0 | 13.0 | 14.0 | NA |
| Yes (n=10) | 100 | 0 | 0 | |
| Stagea | ||||
| I (n=23) | 69.6 | 8.7 | 21.7 | 0.22 |
| II (n=30) | 76.7 | 13.3 | 10.0 | |
| III (n=31) | 80.6 | 19.4 | 0 | |
| IV (n=10) | 70.0 | 10.0 | 20.0 | |
| Delay from EUS to surgery | ||||
| 1 quartile (0–48.75) | 71.4 | 10.7 | 17.9 | 0.78 |
| 2 quartile (48.76–74.5) | 71.4 | 14.3 | 14.3 | |
| 3 quartile (74.51–132) | 71.4 | 14.3 | 14.3 | |
| 4 quartile (>132) | 82.1 | 14.3 | 3.6 |
aBergsland EK, Woltering EA, Rindo G. Neuroendocrine tumors of the pancreas. In: AJCC cancer staging manual, 8th, Amin MB (Ed), AJCC, Chicago 2017. p. 407. NA: Not available; AJCC: American joint committee on cancer