Table 3. Ultrasound findings of patients with ypT0 and ypTis.
| Parameters | ypT0 (%) | ypTis (%) | P-value |
|---|---|---|---|
| Before NCT | |||
| Mean Size ± SD | 29.9 ± 20.0 | 31.6 ± 18.5 | 0.641a |
| Shape | |||
| Oval | 37 (58.7) | 26 (41.3) | 0.015 |
| Round | 11 (91.7) | 1 (8.3) | |
| Irregular | 19 (45.2) | 23 (54.8) | |
| Margin | |||
| Circumscribed | 5 (100.0) | 0 (0.0) | 0.166 |
| Indistinct | 23 (60.5) | 15 (39.5) | |
| Angular | 9 (69.2) | 4 (30.8) | |
| Microlobulated | 20 (51.3) | 19 (48.7) | |
| Spiculated | 10 (45.5) | 12 (54.5) | |
| Orientation | |||
| Parallel | 38 (50.7) | 37 (49.3) | 0.054 |
| Non-parallel | 29 (69.0) | 13 (31.0) | |
| Echogenicity | |||
| Hyper-echo | 1 (33.3) | 2 (66.7) | 0.466b |
| Iso-echo | 11 (68.8) | 5 (31.2) | |
| Hypo-echo | 55 (56.1) | 43 (43.9) | |
| Posterior features | |||
| Enhancement | 28 (71.8) | 11 (28.2) | 0.038 |
| Shadowing | 10 (40.0) | 15 (60.0) | |
| No posterior features | 29 (54.7) | 24 (45.3) | |
| Calcification | |||
| Present | 9 (28.1) | 23 (71.9) | <0.001 |
| Absent | 58 (68.2) | 27 (31.8) | |
| After NCT | |||
| Complete response | 27 (75.0) | 9 (25.0) | 0.010 |
| Residual disease | 40 (49.4) | 41 (50.6) |
aIndependent samples t-test.
bFisher’s exact test.