Asked for female, 57 years old from Visakhapatnam
If there is localized backache than radiation treatment may be the right choice for the time being. Though it won't cure lung cancer. It may help in resolving the local pain. Patient is on erlotinib since 26-6-17. The medicine should have shown some benefit by now. Continue it for another one month. It may be stopped for the time /days spinal radiation is given by your treating doctor. Add bisphosphonates taking care of creatinine and calcium levels. Ask for appropriate amount of analgesics. Given the history of spinal cord atrophy, yes there is risk of further damage to spinal cord by radiation. The dose, fractionation and the areas not to be irradiated will be decided by treating radiation oncologist. For EGFR mutant erlotinib is one of the best drugs. Take care of nutrition. It's important.