text_1: Worried about lung cancer. Up back pain over 1 year now.  Had chest CT 8 months ago it was ok. 3 mris of throastic ok. Some cervical stenosis. Worry?
text_2: Hello doctor I have upper back pain after an Injury and x-ray and CT taken and all is normal. Doctor said it is a sprain. It has been 3 weeks and I find no improvement. Does that make sense?