About a week ago I had a CT scan of my brain due to an auto accident.  The scan showed I have an air pocket in my brain. My primary doctor has ordered a second CT scan to be done in about 2 weeks to see if there is any change in the air pocket. What is the usual causes of an air pocket and is having one something serious?
Hello, thanks for writing to Chat Doctor. Your CT scan has showed an air pocket in the brain-also known as pneumocephalus. The most common causes are trauma- as is in your case and neurosurgery. It occurs when there is a fracture of the skull/para-nasal sinus, and outside air enters the brain cavity. It is not usually serious, unless something called a tension pneumocephalus develops(signs of increased pressure in brain). Otherwise, this is asymptomatic in most patients, and the air will gradually get resorted. Hope I have answered your query. Do write in if you have any more questions. Wishing you a speedy recovery.