Thank you so much for your reply.
The challenge this ENT presented me with is that he has nothing to biopsy. Because it comes and goes, he said he would have nothing to biopsy until it was there all of the time. Your point is valid about cancer - it doesn't come and go. I appreciate that and it calms my nerves in that space - i.e., it's likely not a cancer. From there, I wonder what it is and how it's to be diagnosed and treated? There is a strand in my mind that wonders if this is from the surgery 20 years ago and it's surfacing now as an odd damaged nerve/muscle. I'm not sure.
I'm sort of confused on where to go from here given there is nothing to biopsy, but I continue to experience the lump and the ache associated with it. That, which is most concerning, leads to my inability to speak clearly.
Thanks again!