Possible, but it would have covered up in the earlier ages... it
depends on the site, his could be an atrial septal defect which is
common, though not as common as ventricular septal defect. In this
condition, the valve may have shut it up (the foramen ovale). You
can google it and have a look at the picture of how it looks
like... You don't have to go for surgery, just go for a baseline
check up on your heart... if it's too expensive, you can get it
done in Malaysia... 
