Rare brain condition discovered

A 24-year-old woman found out she was born without a cerebellum after going to the hospital for dizziness. The cerebellum is a part of the brain that helps control movement and balance, and the absence of it, called complete cerebellar agenesis, is very uncommon. Fewer than a dozen cases have been recorded in medical research, and most were only found after death.

Normal life despite missing brain part

The woman, who is now a mother, had lived a typical life without knowing about the missing cerebellum. She could walk, talk, and perform daily tasks without issues. Her condition was only identified after she experienced long-term nausea, prompting her mother to take her to a hospital in Shandong for medical evaluation.

Medical findings reveal unusual brain structure

Doctors observed that she walked unsteadily and had slightly slurred speech. A brain scan showed a large empty space where the cerebellum should have been, filled with cerebrospinal fluid. There were no signs of other serious conditions like hydrocephalus or herniation. The brainstem was in its normal position, and the study authors linked this structure to type 4 Chiari malformation, a developmental issue of the cerebellum.

Study published in medical journal

The case was reported in August 2014 by neurosurgeon Feng Yu and his team from the People's Liberation Army hospital center in Jinan. Researchers suggested that her brain might have adapted by redistributing the cerebellum’s functions, allowing her to live a normal life and even become a mother.