The lesions are NOT a good thing....that means the cancer has begun to eat away at the bones. I don't know who or what your doctor is talking about....but, I had the bone scan over a year ago to see if I had any lesion on the bones in my body. It is very scary....and it feels like a friggen time bomb. Again....the "regular" docs don't talk about MGUS....but read about it and do your research, and you will find that there is a definite correlation between PN and MGUS. MGUS is the initial stage...then it turns to smoldering....and after that...it blows into the real deal....painful, bone ridden cancer.....fun..huh?