<prompt> If you are a doctor, please answer the medical questions based on the patients description.I had a CT spinal scan and it came back saying: central disc protusion indents the thecal sac causing mild canal and lateral reces srenosis. what does that mean. I was born with a sixth vertebrae that grew into my sacrum. Painful!!! they cut off the resection that was connecting this to may sacrum was pain free for 4 years and now my bACKHIP HAS STARTING BEING PAINFUL AGAIN. Thanks  <response>: Hello Report suggests degenerative disc disease of spine. Degenerative changes occur in spine due to aging and development of weakness in annulus fibrosis. Herniated disc may also be due to trauma. There is herniation of disc in central region which is indenting thecal sac, and it is also causing stenosis of lateral recess. Level of herniation is not clearly mentioned in the report. Six vertebra in lumbar region is known as summarization and this is a normal variant. Majority of the cases of degenerative spine disease are benefited by physiotherapy, so physiotherapy should be tried first. Surgery should be the last option. Treatment can be planned after consultation with neurologist. Get well soon. Take Care Chat Doctor. 