Brief Answer:
Family has to decide
Detailed Answer:
Hi. Thanks for the query. It is a tricky situation. As per guidelines, patients in stage IIIB require both
chemotherapy and
radiation. But at 84 years of age, cure is not the only criterion that we should aim for. Her ability to tolerate the treatment is also equally important. Chemotherapy is associated with significant side effects and they should not be ignored in the decision making process. 2 important things to look at are the ER/PR status, Her 2 status and whether it is a left sided
tumor or right sided tumor. If the tumor is ER/PR positive, then at this age according to me,
hormonal therapy in the form of Aromatase inhibitors should suffice. Her cardiac status should be evaluated by a cardiologist before taking a decision. If it is right sided
breast cancer, dose to the heart will be minimal and radiation can be given safely. If it is left sided then dose to the heart will be significant and one has to weigh the risks and benefits of radiation very carefully. Techniques such as IMRT should be used to minimise dose to the heart. If the tumor is Her2 positive,
Herceptin is indicated. It is however cardiotoxic and therefore the heart condition should be good enough to tolerate the medication.If the tumor is ER/PR negative, chemotherapy becomes a necessity, non cardio toxic drugs such as taxanes are preferable at this age. I hope my answer has satisfied you. In case of doubts, please revert back. I will be happy to answer you.