I recently had an ultrasound that showed a small (0.6 cm x 0.5 cm) nodule. My family doctor wants me to have a nuclear scan. I told her I had read that nuclear scans aren't useful in distinguishing between benign and malignant nodules, but she said I'm wrong. History -- I'm 57, was diagnosed with hypothyroidism 4 years ago, currently on 125 mcg of levothyroxine, mother had thyroid cancer at age 77.
I don't want to go off medication for the 6 weeks the hospital requires if this test isn't likely to provide any information. What should I do?