Dandy-Walker variant

A 29 year old man with Down’s syndrome, and no acute clinical symptomatology relevant to the imaging findings. [...]

Chiari I malformation

This 50-year-old female, who reported a history of being in a motorcycle accident approximately two years ago, complained of a one year history of severe headaches and neck pain. An MR examination revealed degenerative disease in the cervical spine associated with a Type 1 Chiari Malformation. [...]