I Recently Had A Brain MRI And The Following Was

I recently had a brain MRI and the following was in the 'results' -- which I cannot understand --
" Moderate parenchymal volume loss and extensive periventricular and subcortical white matter T2 FLAIR signal hyperintensities bilaterally. Mild eentricular prominenace; likely due to ex vacuo dilation. "

What does it all mean? I am a very active 84 year old lady.