Could A Normal Anatomical Variation Be Mistaken As Hereditary Metabolic Disease When A Second MRI Suggests Causes Due To Terminal Myelination Zones?

Hi, I from Brazil. My 27 month old son had an MRI because he had an increased head circumference. I have two different reports with a incidental find: - one of them points out periventricular confluent areas of hypersignal on T2/flair alleging that it may be a hereditary metabolic disease - the other point to confluent areas of hypersignal in the peritrigonal area, probably due to terminal myelination zones. Is it possible that the first report confused an anatomical variation with a false positive for IEM?