Because PVL usually takes a few weeks to become detectable, babies at risk for PVL are tested 4 to 8 weeks after birth. With serial tests it will become more clear. Because PVL results from loss of brain tissue, babies with PVL are at very high risk for abnormal development later on. Even babies who just had suspicious areas need to have their development followed closely. This can be determined only over time.
Serious abnormalities appear gradually.
Less serious problems appear more slowly, are more difficult to detect, and may not be obvious until preschool or grade school. Anytime in the future if you are concerned about something that you think might be abnormal, have it checked out by your baby's doctor. We will not answer specific medical questions about your baby. These should be directed to the physician and nurses who are caring for your baby.