to and from the radiation center for six weeks of external beam radiation according to the invention an autologous free fat patch transfer preferably from the abdomen is used the fat patch 20 shown in fig3 is harvested a placed in the cavity through the incision after removal of the tumor two tacking sutures 22 of 5 0 monocril are used to stabilize the pad adjacent the cavity 24 left which is left after tumor removal and the foley catheter is then placed through the skin adjacent the fat pad into the cavity the foley catheter is replaced by the mammosite u00ae catheter 10 at the time that radiation treatment is to begin the stay sutures are removed after the radiation treatment is completed and the catheter is removed if the breast is of sufficient size the pad can simply be taken from an area about 180 u00b0 from the lumpectomy site down low almost to the pectoral muscle however the abdominal pad is greatly preferred in order to eliminate any possibility of tumor cells in the pad the abdominal incision is made in the left lower quadrant so as not to confuse any physician examining the patient in the future that her appendix was removed a rationale used for incision placement in the 1970 39 s for servicemen returning from vietnam who were being studied for exposure to agent orange as the surgeon removes the patch the 7 mm thickness should be kept in mind after removal the patch is sculptured to.