Skip to content
My WebMD Sign In, Sign Up

Thyroid Nodules

Font Size

What Happens

Most thyroid nodules do not cause problems and are not cancerous. They are often hard to notice because they are so small. Lots of people have thyroid nodules that are never found or treated.

There are three kinds of thyroid nodules: solid nodules, nodules that are filled with fluid (cystic nodules), and nodules that are partially cystic. You can have one thyroid nodule or several thyroid nodules (multinodular goiter camera.gif). You can also have some nodules that are solid and some that are cystic. Solid nodules may grow slowly over time. In rare cases, cystic nodules bleed, which can cause them to grow suddenly and become painful.

Thyroid nodules usually do not prevent the thyroid gland camera.gif from doing its job. But sometimes a noncancerous thyroid nodule can cause:

  • Hyperthyroidism. Hyperthyroidism happens when one or more nodules make too much thyroid hormone. Hyperthyroidism is treated with antithyroid medicine, possibly radioactive iodine, and very rarely, surgery. Hyperthyroidism from thyroid nodules is not very common. For more information on treating hyperthyroidism, see the topic Hyperthyroidism.
  • Difficulty breathing or swallowing. Sometimes, one or more large nodules can press on your windpipe (trachea) or on your esophagus. These kinds of nodules have to be surgically removed.

About 5 to 10 out of 100 thyroid nodules are cancer.1Thyroid cancer is usually diagnosed and treated early, so most people do very well. For more information, see the topic Thyroid Cancer.

1

WebMD Medical Reference from Healthwise

Last Updated: March 14, 2013
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.
Next Article:

Hot Topics

WebMD Video: Now Playing

Click here to wach video: Dirty Truth About Hand Washing

Which sex is the worst about washing up? Why is it so important? We’ve got the dirty truth on how and when to wash your hands.

Click here to watch video: Dirty Truth About Hand Washing

Popular Slideshows & Tools on WebMD

hands on abdomen
Can you catch one?
Woman sitting in front of UV lights
Is yours working?
woman using breath spray
What's causing yours?
womans hand on abdomen
Are you ready for baby?
MS Overview
Recognizing symptoms.
bowl of yogurt with heart shape
Eat for a healthy heart.
woman doing pushups
To help you get fit.
Colored x-ray of tooth decay
Know what to look for.
Woman sitting with child
Do you know the symptoms?
mosquito
Stings, bites, burns, and more.
Allentown, PA
Are you living in one?
Thyroid exam
See how much you know.

Women's Health Newsletter

Find out what women really need.