Cerebral Magnetic Resonance Imaging Findings in Children Born Extremely Preterm, Very Preterm, and at Term

The extremely preterm, very preterm, and term subjects shared the same morphological pathology, revealing no specific preterm MRI pattern, but both premature cohorts had higher frequencies. Differences were mainly limited to mild pathology. Whether MRI lesions were more common in the extremely preterm than in the very preterm group is uncertain as the difference in frequency was similar in the two control groups, suggesting a lack of objective criteria for differentiating mild pathology from normality or that MRI scans normally differ at 11 and 19 years of age.