http://www.iflscience.com/brain/24-year ... -her-brain
The woman’s condition was discovered after she sought medical attention due to nausea and vertigo. CT scans and MRI images revealed the missing cerebellum, which readily explains why those symptoms would be present. It also explains why she wasn’t able to speak until she was six and wasn’t able to walk until age seven. She had never been able to play and jump like normal kids due to this defect.
Amazing.