Can you have a normal echo 1 month.and two months.later a little abnormal? first one everything was normal ,second.one showed mild rv enlargement? why the change? maybe different perspective?????

It is possible : It may be a different perspective, or there may be a process in your body actually contributing to tv enlargement, such as high blood pressure. You should speak with your cardiologist regarding your concerns over the difference.

Reader perspective: Yes that is normal. Some readers over estimate, some under. It also depends on the echo tech. Do what I would say is follow your symptoms as far as this is concerned .a change in two months is unlikely unless your symptoms have changed.