Diffuse means transfer of molecules from one place to other place.
Diffuse osteopenia is mild decrease in bone mineralization - not as severe as osteoporosis
It's when you eat to much poppycock
Diffuse mild cortical atrophy means a little bit of shrinkage all over the brain cortex.
This means that a molecule will go from where there are a lot of the same molecules (highly concentrated), to where there is only a few of those same molecules (low cocentration).
diffuse -- spread out, not in one particular place mild -- same as lay terminology bulge -- same as lay terminology