Are there any alternative treatments for breast cancer instead of radiation?

Not really: Radiation reduces the risk of cancer recurring in the breast. It is done after surgery. There is no similar alternative treatment. Patients who have a mastectomy instead of a lumpectomy can sometimes avoid radiation if the cancer is small and no lymph nodes are involved. A radiation oncologist can outline the risks of cancer recurring with and without radiation.

Yes: In cases where a lumpectomy was done the alternative is to have a mastectomy. But if many nodes or a large tumor is found even with mastectomy the chestwall will needs radiation. Also women older than 70 with good features and positive receptors can have lumpectomy and hormones and can omit radiation.

Depends on size: It would depend on the size of your tumor and the lymph nodes. But a mastectomy can be performed in some cases to avoid radiation.