One page summary: Periventricular leukomalacia (PVL)

In two sentences

Periventricular leukomalacia, or PVL, is injury to the white matter of the brain in the area next to the fluid spaces called ventricles. White matter is the wiring that carries signals from the brain down to the body. ¹

It is most common in babies born early. Because the wiring that goes to the legs runs closest to that area, PVL most often affects the legs, which is why it is the usual route to spastic diplegic cerebral palsy. ¹

The numbers, with their sources

• Who it affects. Babies born early, and the risk rises the earlier the birth. Preterm birth is the leading risk factor for cerebral palsy ²
• Where the injury sits. The white matter beside the ventricles, a region with a fragile blood supply between about 24 and 34 weeks of pregnancy ¹
• Why the legs. The nerve fibers carrying signals to the legs pass closest to the ventricles, so they are damaged first ¹
• How it is found. Cranial ultrasound through the soft spot is the usual first test in the NICU. MRI near the due date shows the extent more accurately ¹
• A prevention that is proven. Magnesium sulphate given to a mother in preterm labor before 32 weeks reduces the risk of cerebral palsy in the baby ³
• The other proven step. Antenatal corticosteroids given before an expected preterm birth improve survival and reduce brain complications ⁴

What to do this week

1. Ask whether a term-equivalent MRI is planned, and if not, why not.
2. Ask for a copy of every head ultrasound and MRI report, not a summary.
3. Refer to early intervention now. Prematurity alone qualifies a child for evaluation in many states.
4. Book a vision assessment and ask specifically about cortical visual impairment.
5. Learn corrected age and use it for every milestone question for the first two years.
6. Ask to be enrolled in the NICU follow-up clinic and keep the appointments.

Questions to take with you

Take these with you. Write the answers down in the moment, because you will not remember them later.

For the neonatologist

• What exactly did the head ultrasounds show, and on which days?
• Is a term-equivalent MRI planned?
• Was magnesium sulphate given before delivery? Were antenatal steroids given?
• Are we enrolled in the follow-up clinic, and when is the first appointment?

For the pediatric neurologist

• How much white matter is affected, and where?
• What would you expect to see by 12 months corrected if things are going well?
• Should we be watching for seizures?
• When would you reassess for cerebral palsy?

For the ophthalmologist

• Is there any sign of cortical visual impairment, as opposed to an eye problem?
• What should we change at home to make it easier for my child to see?
• When should we recheck?

You can also build a printable list with the question generator.

Where to read more

The full page on this condition covers how it happens, causes split into what happens even with perfect care and what is associated with gaps in care, signs by age, diagnosis, treatment, outlook, daily life and lifetime cost.

Read the full page on Periventricular leukomalacia (PVL)

Related pages are listed at the bottom of it, including the events that can lead to this condition and the guides that cover therapy, school and money.