Table 2.
Characteristics of the 25 clips
| Clinical features | No. (%) of clips successfully removed (N = 21) | No. (%) of clips missed (N = 4) | P valuea |
|---|---|---|---|
| Type of clip | .0103 | ||
| UltraCor Twirl | 13 (61.9) | 0 (0) | |
| HydroMARK | 7 (33.3) | 2 (50) | |
| UltraClip Dual Trigger | 1 (4.8) | 1 (25) | |
| UltraClip | 0 (0) | 1 (25) | |
| Sonographic features | |||
| Pre‐NACT clipped node size (mm)b | .7870 | ||
| <10 | 5 (23.8) | 2 (50) | |
| 10‐20 | 10 (47.6) | 1 (25) | |
| >20 | 6 (28.6) | 1 (25) | |
| Pre‐ NACT clipped node cortex size (mm) | 1.0000 | ||
| <5 | 10 (47.6) | 1 (25) | |
| 5‐10 | 7 (33.3) | 2 (50) | |
| >10 | 4 (19.1) | 1 (25) | |
| Post‐NACT clipped node size (mm)b | .7652 | ||
| <5 | 9 (42.9) | 1 (25) | |
| 5‐9 | 9 (42.9) | 3 (75) | |
| >9 | 3 (14.2) | 0 (0) | |
| Post‐NACT clipped node cortex size (mm) | .1799 | ||
| <0.5 | 9 (42.9) | 0 (0) | |
| 0.5‐1 | 2 (9.5) | 0 (0) | |
| >1 | 10 (47.6) | 4 (100) | |
| Skin to clip distance postchemotherapy (cm) | .0167 | ||
| <1.0 | 4 (19.1) | 0 (0) | |
| 1‐1.5 | 12 (57.1) | 0 (0) | |
| >1.5 | 5 (23.8) | 4 (100) | |
| Pathological features | 1.0000 | ||
| ypNc | |||
| ypN0 | 8 (44.4) | 1 (50) | |
| ypN+ | 10 (55.6) | 1 (50) |
Abbreviation: NACT, Neoadjuvant chemotherapy.
a
Fisher's exact test.
b
Based on the largest size dimension.
c
Based on 18 metastatic lymph nodes.