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Thyroid nodule

Thyroid nodules are abnormal growths in the thyroid, a butterfly-shaped gland that wraps around the windpipe (trachea). Most thyroid nodules are harmless, although a small percentage are cancerous.

Signs and symptoms of a thyroid nodule include:

  • Swelling or a lump in the thyroid gland.
  • Pain and tenderness in the thyroid gland.
  • Problems swallowing.
  • A hoarse or scratchy voice that does not go away.

If the thyroid nodule is making too much thyroid hormone (hyperthyroidism), symptoms may also include fatigue, unexplained weight loss, frequent bowel movements, a fast heartbeat, the inability to tolerate heat, irritability and anxiety, and muscle weakness.

Nodules that are not cancerous (benign) may be observed but not treated for a period of time. However, all or part of the thyroid gland may need to be surgically removed for cancerous (malignant) nodules, nodules in which cancer is suspected, and large benign nodules that cause problems with breathing or swallowing.

Author Jeannette Curtis
Author Caroline Rea, RN, BS, MS
Editor Kathleen M. Ariss, MS
Editor Susan Van Houten, RN, BSN, MBA
Associate Editor Tracy Landauer
Associate Editor Pat Truman
Primary Medical Reviewer Patrice Burgess, MD
- Family Medicine
Primary Medical Reviewer Adam Husney, MD
- Family Medicine
Primary Medical Reviewer Kathleen Romito, MD
- Family Medicine
Last Updated May 25, 2007

WebMD Medical Reference from Healthwise

Last Updated: May 25, 2007
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.