So a few things.
The diastolic filling pattern indicates impaired relaxation- simply means your heart is a little stiff and doesn't fill as easily after each beat, called diastolic dysfunction and is fairly common.
There is mild concentric left ventricular hypertrophy- This means the walls of your left ventricle are a little thick, again fairly common, Could be the result of chronic high blood pressure.
Stress image reveal a medium sized perfusion abnormality of mild to moderate intensity- could indicate that this area was not getting a good blood flow during exercise, you should get more information from the doctor when you discuss your results as this may be a non-issue as well.
EF greater than 55%- this is normal.
the electrocardiogram did not show ST-Segment changes diagnostic- this means your EKG did not change, this is a good thing.
I am not a doctor, just related from my experiences so please ask your doctor to answer any questions you have. Good luck!