Re: MRI report on back, What is diagnosis ????
From the part of the report that you included, you have degenerative disc disease at L3-L4 and L4-L5. The symptoms that are mentioned are signs of arthritic changes in the bones of the vertebrae (the endplates are the edges of the vertebrae -- when you look at an MRI, the edges that appear to be touching the long sides of the discs will look kind of jagged or rough).
The facet joints are synovial joints that contain fluid which allows them to move freely. The report indicates that there are small effusions located within the facets at these same levels. This is a sign of degenerative changes and can allow some fluid to leak out. Often the facets enlarge which can put pressure on the adjoining spinal nerves.
The report does not indicate the extent of the degeneration, but it does not indicate it causing stenosis or nerve compression.
The report seems to indication that the disc protrusion at T9-T10 may be causing some pain. This would be in addition to whatever else is going on in the lumbar region. I would think that this might tie into your Scheuermann's Disease, depending on where you have issues with that.
Perhaps they mean there is no reason to perform surgery, but I'm sure they can be treated with conservative measures such as epidural spinal injections, etc.