I have an abnormal growth in my hand under the skin. The hand specialist has no idea what it is even after X rays and MRI. He scheduled me for surgery while I'm asleep to perform the biopsy. Should he first take a biopsy with a needle? He said he does not want to use local anisthetic for fear of spreading whatever the growth is. Should I go through with the incision biopsy or get a second opinion first?