I had my mitral valve replaced due to bacterial endocarditis over 5 years ago. On my last echo my cardiologist mentioned I had a slightly dilated aorta and said it wasn't anything to worry about but we'll keep an eye on it. The last couple of weeks I have occasionally felt some mild pressure in my upper left chest and last night while I was exercising it seemed to get a little worse. It's nothing severe but I notice it. Is this possibly related to the dilated aorta. I'm going to make an appointment with my cardiologist and have things checked out, I was just curious if anyone else has experienced this.