My mom was diagnosed with stage 4 lung cancer in July 2014 due the malignant plueral effusion. She's done some immunotheraphy and in October started Alitma. Her plueral effusion dried up in December. A number of her symptoms have gone away. Last week based on her CT scan a bone scan was ordered. There are spots on her pelvis, sacrum and ribs. She currently has no pain. She's been referred for radiation. She is considering not getting radiation because of the potential damage to her blood cells from radiating in the pelvic area. I'm worried about what might happen to her bones if she does not get radiation. I'm going with her to the radiology consult. Are there specific questions I should ask? When might she expect to start feeling pain? What are the risks if she chooses not to do radiation? What impact would radiation have on her red blood cells?