Hi i was diagnosed with MVP by having angiogram in 1980. I have had several echocardiograms since. From 2007 until just recently the echos show i don't have MVP. Last echo done September 24,2018 showing i do not have MVP but PVCs. My ? Is , after years of being told i have MVP,floppy valve disease, hearing a clicking sound could the echo years ago been misdiagnosed?