Dr. respond--PET SCAN results

I recently had a PET scan of the brain and the results were "abnormal for a 27-yr old" "diminished blood flow to the parietal lobe, left greater than right"  I can't get any answers about what diagnosis if any this could be, causes or treatments.  Any help interpreting PET scans please!

[painkiller99]

Hi.

It would be helpful if you told us why the PET scan was done in your case.  Did you have any significant symptoms which a PET scan could shed light on?

Aside from a finding of less blood flow to on your left parietal lobe, nothing else can be assumed from your findings.

[LynnL]

The importance in the findings is not the fact that the left lobe has greater blood flow loss than the right...it is that the findings concluded:
"abnormal diminished blood flow to the parietal lobe for a person of my age."  

I am having motor skill problems..memory recall, speech pronunciation, poor concentration, extreme fatigue, lethargy, all leading to an inability to carry on a conversation.  

I am also having tingling in my head and face.  

After having the PET, upon request of the radiologist, I had an MRI of the brain which came back negative.  

I've been told by my doctor that the MRI rules out a lot of disorders, but she does not know anymore information.  

The MRI results have not eased my concern and I am still having symptoms.