How Can Breast Cancer With Lung Activity Be Treated?

My wife was just given a cat scan which detected breast cancer and showed some activity in lung. She was then told to get Pet scan, which she has just completed, and as told by her surgen, pet scan showed some activity in lungs and a tumor, about golf ball size in abdomen. he said next step is to get biopsy of this tumor which we are now preparing to set up. She, also, has broken out with a red rash on part of face, neck and chest and back. What should she take to rid the rash and let us know what other information you could provide for her current condition. Thankyou, OTIS