Derek,

I've had a similar experience. Several weeks ago, I had a small bump filled with clear fluid develop near an area of my tongue where I had a biopsi done. The bump developed approximately three weeks after the original biopsi that came back negative. After several days, the bump appeared to have gone away (pop). Approximately two weeks later, the same bump appeared, again with clear fluid. I scheduled an appointment with my ENT. He became concerned and did another biopsi. The biopsi came back negative again. while doing the biopsi, the ent noticed a saliva gland near the infected area. It appears that this is what you have also, a saliva gland that is reacting to a surgical site. Good luck, keep me posted Glenn