Table 3 Relationship between flat epithelial atypia, atypical ductal hyperplasia, lobular neoplasia (atypical lobular hyperplasia/lobular carcinoma in situ) and columnar cell change
N | Flat epithelial atypia present (%) | P-value | |
|---|---|---|---|
Atypical ductal hyperplasia | |||
Absent | 346 | 37 (11) | <0.0001 |
Present | 197 | 66 (34) | |
Atypical lobular hyperplasia/lobular carcinoma in situ | |||
Absent | 404 | 59 (15) | <0.0001 |
Present | 139 | 44 (32) | |
Columnar cell change | |||
Absent | 381 | 53 (14) | <0.0001 |
Present | 162 | 50 (31) | |
