What did your CT scan or MRI show?
There is a possibility that the masses caused your loss of balance and that were responsible for your multiple falls. Usually it is pretty easy to differentiate the changes seen in the brain in scans; which are caused by the fall and masses.
Please feel free for your follow up questions.
With your so certain history, you can ask your primary care physician to get a PET scan (positron emission tomography). This is a superior scan than the CT or MRI and may be able to identify the brain injury due to the fall.
It is pleasure and privilege assisting you.
The doctors go by the clinical findings and medical imaging studies. I agree with you that there is a possibility of head injury due to the fall and there are many injury which may not show in modern medical imaging but since they are not evident, the usual conclusion drawn is what is conspicuous. In your case the pointer would be the masses seen in brain.
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