question: Hello doctor, My MRI scan report shows: Right central disc protrusion causing minimal thecal sac indentation which is seen just abutting the spinal cord at C5-C6 level. Disc protrusion causing subtle thecal sac indentation at C6-C7 level. Disc protrusion causing subtle thecal sac indentation at C4-C5 level. Disc protrusion causing subtle thecal sac indentation at L3-L4 level.