Enlarged Heart (Cardiomegaly) FAQ

What is enlarged heart?
One of my doctors told me that I have enlarged heart. But another doctor recently told me that my heart is normal. I am confused.
What should I do if I have enlarged heart?
What could I expect if I have enlarged heart?
If I have an enlarged heart but no symptoms, do I still need to be worried?
Does enlarged heart mean I will die soon?
Can an enlarged heart be fixed?