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Table Preoperative diagnosis rates and percentage of patients with two or more operations in invasive and non-invasive screen-detected cancers

From: Does preoperative diagnosis reduce the number of operations required for treatment of screen-detected breast cancer?

  Non-invasive Non-invasive Non-invasive Invasive Invasive Invasive
  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%