My daughter who will be 4 in August was diagnosed with cp at 6 months of age.  Her MRI 's reveal no vascular abnormalities, therefore a stroke was ruled out.  It did however say that there was Wallerian degeneration due to an ischemic brain injury occurring inutero.  What does this mean?  I've researched Wallerian degeneration but am not able to find any information that I can understand (it's all in medical terms). Can you help me please?

c A nerve cell has two main parts: a cell body where the nucleus lives and a long skinny cable-like part called the axon. The axon is the part of the nerve cell that acts like a telephone cable, transmitting messages from the cell body to other nerve cells or to muscles.  If the cell body dies, as in a stroke, there is nothing to keep the axon alive, so over time it dies also. This is Wallerian degeneration.   It takes several months for the axon to die, so Wallerian degeneration is not apparent immediately after the stroke.

Ischemic brain injury, if it is focal and not widespread, is another name for a stroke. Vascular abnormalities are almost never found by MRI in infants with stroke.