Can you tell me about complex thyroid nodule, was diagnosed benign about 12 months ago?

Complex nodule: Thyroid nodules are areas within the thyroid that appear different than the surrounding normal thyroid. They may be solid or cystic(fluid-filled). A complex nodule would usually refer to a cystic nodule with some solid areas within it. The risk of a complex (cystic) nodule being cancer is in between that for a solid nodule and a purely cystic nodule.