Table 2.
Weiss parameter distribution in the ACC cohort. Number and percentage of positive or negative cases for each Weiss parameter are indicated in the total cohort and R0 patients
| Total cohort (n = 79) |
R0 patients (n = 44) |
|||
|---|---|---|---|---|
| Weiss parameter |
Negative n (%) |
Positive n (%) |
Negative n (%) |
Positive n (%) |
| High nuclear grade | 19 (24%) | 60 (76%) | 13 (30%) | 31 (70%) |
| Atypical mitosis | 42 (53%) | 37 (47%) | 28 (64%) | 16(36%) |
| > 5 mitoses per 50 high-power fields (10 mm2) | 13 (16%) | 66 (84%) | 9 (20%) | 35 (80%) |
| Clear cells ≤ 25% | 11 (14%) | 68 (86%) | 4 (9%) | 40 (91%) |
| Diffuse architecture | 22 (28%) | 57 (72%) | 8 (18%) | 36 (82%) |
| Necrosis | 18 (23%) | 61 (77%) | 13 (30%) | 31 (70%) |
| Venous invasion | 40 (51%) | 39 (49%) | 24 (54%) | 20 (46%) |
| Sinusoidal invasion | 38 (48%) | 41 (52%) | 21 (48%) | 23 (52%) |
| Capsular invasion | 35 (44%) | 44 (56%) | 18 (41%) | 26 (59%) |