Had an MRI done yesterday on my back. Reports says The marrow signal is somewhat heterogenous. There is no endplate destruction underlying anemia is not excluded. L1-2, l2-L3, L3-L4, L4-L5, L5-S1 disc space is desicaated & narrowed. L2-L3 has shallow protrusion is noted anteriorly & posteriorly, L3-L4 Facet arthrosis is noted, L4-L5, L5-S1 Facet arthrosis is observed. What does all this mean?