What will happen if I get this filler dissolved?

About 1.5 years ago I had HA filler in my lips. Prior to that I had been getting filler in my lips every year or so. Just half of a syringe. The filler I last had 1.5 years ago left me with this white hard lump. I'm guessing since it's still here over a year later it's not going to go away in its own. I mentioned it to my injector but she told me it would be too risky to dissolve. Is this true?