Hi, My mom has stage IV bc, that has spread to her liver (she's been on herceptin for 18 months) and now her brain, she has 5 leisions, and has done 14 wbr treatments. Last months mri showed one tumor is growing, so she had stereotactic radiation on 4 or 5 leisions, since this time she has gone down hill quickly,she cannot walk, talk well, and all we are getting is wait and see. Has anyone else experienced these side effects.