my mother was diagnosed and she has breast cancer .invasive ductal carcinoma (luminal b).the tests showed these results .oestrogen receptor postive .progesterone receptor negative.her2 negative .ki67 was 30% . she is 75 years old and had a stroke few years ago but now she is doig fine .the doctor said surgery at her age is high risk for her because she may not survive a general anesthesia.we don t know what to do because xrays showed some tiny stains in her lungs too which we believe that the cancer has already reached her lungs .is there anyone here who can help me please and who has experienced similar situation ?is hormonetherapy and taking tamoxifen to control the cells growth safe at her age ?