When a saline implant leaks, it deflates, and the breast loses its added volume. Your body will naturally absorb the saline solution, so there are no adverse health effects when this happens. Still, the cosmetic effect will be noticeable, as the affected breast will look flat and deflated.
When a silicone implant ruptures or leaks, it doesn’t always change the breast’s appearance, but you will still need to have the affected implant taken out to prevent the leaked silicone from spreading into the surrounding tissue over time. The FDA recommends annual mammograms for women with silicone implants – as a health screening and to check implant integrity.