"You can do nothing ". well first consult a trusted MD to see that there is really no life threatening issue. With advanced technology miniature tumors are detected early. Some regress without treatment, others may be false positive. Some doctors argue that DCIC and LCIS should not be called cancer at all. When there is no life threatening issues or after conventional treatment it is always good to apply CAM (see "Implementation of CAM in cancer treatment" by professor Zajicek). When cancer recurs it is considered as a chronic incurable disease. The objective of the therapy should then be to prolong dormancy. During dormancy tumor is either too small to be detected by current means or stopped growing and penitent feel healthy. There is more than a tumor in a cancer. It is an interaction between organism and tumor (the disease is driven by infecting virus, a so called aggressive tumor is the response of the organism to an aggressive viral infection). A good therapy plan takes into consideration host resistance and uses smaller drug doses and reduces its grave side effects to minimum.