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Occurrence of ipsilateral and contralateral breast cancers, according to the histological category of benign breast disease
| Ipsilateral | Contralateral | |
|---|---|---|
| n (%) | n (%) | |
| Benign breast disease | ||
| Nonproliferative disease | 52 (59.1) | 36 (40.9) |
| Proliferative disease without atypia | 19 (57.6) | 14 (42.4) |
| Proliferative disease with atypia | 4 (80.0) | 1 (20.0) |
| Total | 75 (59.5) | 51 (40.5) |
Results are shown for 126 cancers. The histological category in the remaining 32 cases was unknown
