Table 3 The correlation between the initial pattern of enhancement in the baseline study and the post-NAC shrinkage patterns
| Â | Solitary (n = 26/81, 32.1%) | Grouped (n = 13/81, 16%) | Separated (n = 32/81, 39.5%) | Replaced (n = 10/81, 12.4%) | ||||
|---|---|---|---|---|---|---|---|---|
N | % | N | % | N | % | N | % | |
Complete response (n = 20/81, 24.75%) | 6/26 | 23% | 5/13 | 38.5% | 8/32 | 25% | 1/10 | 10% |
Type I: concentric (n = 24/81, 29.6%) | 20/26 | 77% | – |  | 4/32 | 12.5% | – | – |
Type II: concentric with surrounding lesions (n = 15/81, 18.5%) | – |  | 1/13 | 8% | 14/32 | 43.7% | – | – |
Type III: residual multi-nodular (n = 9/81, 11.1%) | – |  | 5/13 | 38.5% | 2/32 | 6.3% | 2/10 | 20% |
Type IV: diffuse enhancement (n = 9/81, 11.1%) | – |  | 2/13 | 15% | – | – | 7/10 | 70% |
No response (n = 4/81, 4.95%) | – |  | – |  | 4/32 | 12.5% | – | – |