I am very confused. For several months, my primary doctor has been watching the calcium levels in my blood and recently referred me to an endocrinologist. I had a test for growth on my thyroid and nothing was found. I am now scheduled for several tests---blood work, bone density, etc. with the possibility of surgery. Basically, I was told we ll discuss this after the test results. What is it that would make surgery necessary? How serious is this surgery? What can I expect afterwards? (I am 62 years old.)