i am a 51 year old female. i have had sciatic pain for more that 6 years. i have been to chiropractors with some relief, however lately it’s not helping. went to surgeon who took x-rays and diagnosed spinal stenosis and ordered mri of lumbar spine w/o contrast, after the mri the dr’s office contacted me stating that the radiologist wanted to do mri w/contrast. again dr’s office contacted me and now he wants an mri on thoracic spine as he may see a mass on my spinous (i think that was what she said) which may be cause of pain. should i be terrified that there is a mass if surgery is recommended what is recovery time?