What is a complex thyroid lesion?

found in a cat scan

also considered an endocrine problem
you have a lesion on your thyroid that is not simple. Check it out with an ultrasound to see if it is a solid mass or if it id fluid, Could be Grave's Disease, and can also be cancerous as well, You can have both of them. It can be Hashimotos thyroiditis. Do you have a goiter (large lump there) or does it seem hard to swallow. THIS AREA IS MY AREA of expertise!!! You can get radioactive iodine to stop it from growing or part or all of it can be surgically removed with a small scar. May need to take Synthroid after it, Are you hypo or hyper thyoid or is it funtioning normally? Any symptoms?