There is a piece of stitch left in my incision area from my breast augmentation. Is this dangerous? (Photo)

You should get this remaining stitch removed, as your skin will react to it by becoming irritated. There is also a risk of infection. 

Thank you for your pictures. If you retain status that can be easily seen or felt I think it should be removed.  Permanent sutures can be left in place in the body and the body will scar around them. There's always a potential if it's very close to surface for infection. Have your plastic surgeon evaluate and treat you if necessary.Good luck.Earl Stephenson Junior MD DDS FACS

Dear RockvilleGal628, It is normal for the area to be pink around a suture remnant. This will likely not improve unless the irritant is removed. It is always best to check with your surgeon before trying to remove the suture yourself, they may want to see you in their office to do so. Good luck!

and yours is no exception.  But if its sticking out, a little tug with a tweezer may allow it to be removed.  If its attached to deeper things, let your surgeon fix this problem for you and give the office a heads up so they can allot the extra time needed to get it out.

What is unusual is you taking the time to photo and post and ask your retained suture question over the net? Why not see your surgeon to have it removed???