Written by Samantha C. Shapiro, MD | Reviewed by Mandy Armitage, MD Key takeaways: – Thyroid nodules are lumps on the thyroid gland. They’re extremely common.– Most thyroid nodules don’t cause symptoms and are found by accident.– Treatment depends on the type of thyroid nodule. Many don’t need any treatment at all. peakSTOCK/iStock via Getty...