“…These shifted growth curves are more likely to reflect abnormal development at the microscopic level rather than simply delayed development, given the abnormal neurodevelopmental outcomes in TTTS. 4,5,9,11 It is not unusual for subtle diffuse structural abnormalities to manifest as neurodevelopmental pathology, such as learning disabilities, attention deficit disorder, and behavioral disorders (autism), in contrast to the apparent neurologic deficits associated mainly with readily recognizable focal lesions (porencephaly, cystic PVL), such as in cerebral palsy. As can be seen in premature birth survivors, these diffuse changes may be rather common and may have significant impact on long-term outcomes for surviving children with TTTS.…”