Table 2 Axillary node characteristics at posttreatment breast MRI associated with ypN status
MRI Parameter (33) | ypN0 (6) | ypN1-2 (26) | ypN3 (1) | P Value |
|---|---|---|---|---|
Number of suspicious nodes | ||||
• ≤ 3 | 6 | 21 | 1 | .704 |
• 4–9 | 0 | 4 | 0 | |
• ≥ 10 | 0 | 1 | 0 | |
Maximal diameter of the most suspicious node | ||||
• < 10 mm | 6 | 13 | 0 | .155 |
• 10–19 mm | 0 | 10 | 1 | |
• ≥ 20 mm | 0 | 3 | 0 | |
Perinodal infiltration | ||||
• Absent | 6 | 13 | 1 | .412 |
• Present | 0 | 13 | 0 | |
Cortical thickness | ||||
• < 10 mm | 6 | 18 | 1 | .568 |
• 10–19 mm | 0 | 7 | 0 | |
• ≥ 20 mm | 9 | 1 | 0 | |
Hilum | ||||
• Normal | 3 | 6 | 1 | .138 |
• Displaced/Loss | 3 | 20 | 0 | |
Shape | ||||
• Oval | 4 | 16 | 1 | .816 |
• Round | 2 | 7 | 0 | |
• Irregular | 0 | 3 | 0 | |
Abnormal restricted diffusion | ||||
• Absent | 4 | 5 | 1 | .072 |
• Present | 1 | 17 | 0 | |
• Missing | 1 | 4 | 0 | |