Should a Core Biopsy be counted in the Gail model?

There is disagreement about this but the answer is normally no. The Gail model uses the number of biopsies as a surrogate for the presence of atypical hyperplasia. On the assumption that about 10% of biopsies will show AH, the Gail Model adds 10% of the risk of having...

In a patient with a prior history of breast cancer does that automatically mean she has had one biopsy, but without LCIS or atypia, or will that risk factor come out in her personal history of prior breast cancer.

The ‘number of biopsies’ question is only used by Gail and TC, both of which are not applicable for breast cancer patients, so the answer would not change calculations anyway.   I would tend to say zero, as that was the count before the cancer was known. Once the...