There is I3 C and DIM that would interfer with tumor growth should a new one come along. Both are natural derivitives of broccoli/ cauliflower type food. As a result, no side effects. I get mine from Life Extension. I would also recommend some vegatable powders to alkalyze the system as you rebuild your immune system this will prevent recurrance.
Dear Susie: As with all medicine, benefits must always be considered along with risks and a decision made as to the best course of action. If you are premenopausal and the tumor is estrogen receptor positive, consideration could be made to remove the estrogen produced by the ovaries (either with surgery or with medication). You should discuss this with your physician who can discuss whether this would be a consideration in your situation.