What Do “borderline Atrial Dilation” And Trace Mitral, Tricuspid, And Pulmonic Regurgitation On My Echocardiogram Mean?

I recently had an echocardiogram. Results indicate the following: What does each mean? Do I need to be concerned ?

1. left atrium borderline dilated
2. right atrial cavity borderline dilated
3. a trace of mitral regurgitation
4. a trace of tricuspid regurgitation
5. a trace of pulmonic regurgitation