- Patient Is currently free of breast cancer (no evidence of disease). This is also left to investigator judgement, but generally should include no evidence of distant disease on chest x-ray or mgmmogram of the opposite breast prior to registration, within 3 months prior to surgery; and no gross or microscopically positive surgical margins noted in the final surgery or pathology reports. Patients with synchronous bilateral breast cancer may be considered, provided both breasts are treated with curative intent and that eligibility is based on the side with the most adverse prognostic features.