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| Upgrade | IDP without atypia (n = 234) No. (%) |
IDP with atypia (n = 41) No. (%) |
Papillary neoplasm (n = 54) No. (%) |
p-value |
|---|---|---|---|---|
| Not upgrade | 220 (94.0) | 30 (73.2) | 37 (68.5) | < 0.001 |
| Upgrade | 14 (6.0) | 11 (26.8) | 17 (31.5) |
IDP=intraductal papilloma.
