MRI confirms fillers in chin area, dissolution? (Photos)

I'm not sure what the question is, but you do bring up a very good point. Although we typically say that HA fillers will last 6 to 8 months, that does not necessarily mean that all of it will go away especially when a big bolus of filler is injected. Sometimes your body will encapsulate the filler or form scar tissue around it and it will stay there indefinitely. I usually recommend using small amounts of fillers at one time because you can always add to it but you can't always take it away. Fortunately, your results actually look pretty good.