Some but not all things in radiology have standardized
nomenclature. Out of all the subspecialties, women's imaging is the most structured with the BI-RADS lexicon. In your case, mild, moderate, and severe sound more like subjective terms. You should obtain a copy of your radiology images on a disc in DICOM format, bring it to your main facility, then have a radiologist and/or neurosurgeon compare the images to see if there is any interval change.