The most important diagnostic test to differentiate thyroid<unk>  from other nodules is fine needle aspiration (FNA).
Thyroid adenoma other diagnostic studies
Thyroid nodule other diagnostic studies
Medullary thyroid cancer other diagnostic studies
Thyroid adenoma other imaging findings
Toxic multinodular goiter other diagnostic studies
Medullary thyroid cancer risk factors
Papillary thyroid cancer risk factors
Thyroid nodule other imaging findings