Table Preoperative diagnosis rates and percentage of patients with two or more operations in invasive and non-invasive screen-detected cancers
| Â | Non-invasive | Non-invasive | Non-invasive | Invasive | Invasive | Invasive |
|---|---|---|---|---|---|---|
| Â | 1990-1993 | 1993-1996 | 1996-1999 | 1990-1993 | 1993-1996 | 1996-1999 |
Preop diagnosis rate | 18% | 36% | 68% | 37% | 52% | 84% |
% with 2 or more operations without preop diagnosis | 38% | 54% | 42% | 27% | 43% | 50% |
% with 2 or more operations with preop diagnosis | 17% | 34% | 26% | 6% | 11% | 11% |