Thanks Tina,

I think I am going to go that route. I also have had twilight sleep with the piece on for a simple endoscopy and wasn't worried about that. This is also a bit more involved. It's a short procedure (an hour or an hour and half biopsy of a lymph node under the arm) and an anesthesiologist will be there along with the doctor.
So unless someone says something then I will wear.
Thanks for mentioning your experience....