Cerebellar ptosis or "slumping"

Has anyone heard of cerebellar ptosis or slumping? From what I gather its when the cerebellum or brain drops “slumps” causing further herniation after surgery due to the removal of too much bone leaving no support or stability. Does anyone have any info on this?

Thank you for responding Ms. Abby, I don’t have cerebellar slumping thank god I was just curious as to what it was and the causes due to someone mentioning it to me because of the pain that I am having in my lower back, right leg along with an awful burning feeling but other than those issues I am doing remarkable. I’m still learning alot about my condition because there really wasn’t alot of time between being dx and surgery. I think my surgery was successful, my symptoms are now gone and I feel a tons better than I did pre surgery. Thanks again I really appreciate any advice and suggestions that I can get because I am so new at this and I just want to stay on top of things.