question: My sister in law has Stage 4 TNC, Grade III, mets in lungs, throat and brain, most recently found in left hip. She is bedridden now due to pain in back (from lungs) and in hip from cancer . She is 48 years old. She is choosing to do the hip replacement as she believes it will relieve her hip pain and keep her from being in a wheelchair the rest of her life. We are concerned as to whether the risk of surgery is worth the hip replacement. Oncologist estimates 3-4 months survival without chemo and with chemo, if she reacts most favorably, up to 2 years. Any opinion?