1.5 years post-op - Why does this lump keep coming and going? (Photos)

I’m not sure what the lump is caused by but it comes and goes and I just want it to stay gone. Some days it’s more swollen than others, I’m already a year and a half post op and I have had a couple steriod injections which have seemed to help a little. Any ideas of what this is? I will add a photo where the lump is there and then another when it’s not.