My babies MRI result

Please could you tell me in lay terms what my 8 month old sons MRI results could mean. He was scanned because he has impaired vision and developmental delays. His head circumference is on the 9th centile as opposed to his weight and length which are on the 50th. We have now been refferred to a neurologist but the appointment is not until November.
"The brain is normally formed.Craniocervical relationships are normal and no evidence of tonsillar herniation. The CSF spaces are rather prominent and the cerebral white matter is immature. On itis own I would not find this abnormal but noting also there is suboptimal myelination in the posterior limbs of the internal capsules I think the white matter change is probably abnormal too. A detailed examination of the anterior optic pathways shoes normal optic nerves and chiasm. No focal abnormality is seen in the brain parenchyma of significance in relation to the childs delayed visual maturation."
Any help would be appreciated

[Christopher R Newey, DO]

Thanks for using the forum. I am happy to address your questions, and my answer will be based on the information you provided here. Please make sure you recognize that this forum is for educational purposes only, and it does not substitute for a formal office visit with a doctor.

It is difficult to comment directly on the images without the ability to see them for myself. Prominent CSF spaces means enlargement of the spaces holding the fluid surrounding the brain and spinal cord. They can be enlarged in conditions that block the reabsorption or circulation of this fluid.  Another way for these spaces to enlarge is from decreased brain volume (i.e., atrophy).

Myelination of the nervous system occurs in stages. If the MRI was read by a radiologist who is not familiar with a young brain, he/she may read it as suboptimal myelination. However, these findings do need to be taken in the clinical context. For example, abnormalities in the posterior limb of the internal capsule may lead to movement disorders. I highly recommend that you follow up with a pediatric neurologist to discuss your child’s history and MRI findings.

Thank you for this opportunity to answer your questions, I hope you find the information I have provided useful, good luck.