September is Thyroid Nodules Month in Canada

There are many types of Thyroid Disease. To bring attention to the different disorders, we plan to feature a different Thyroid topic each month. For the month of September we are focusing on Thyroid Nodules.

Thyroid Nodules

A thyroid “nodule” is a localized “swelling” or “lump” within the thyroid gland. A thyroid nodule can be single or multiple in which case it is part of a “multinodular goitre”. Multinodular goitre is not uncommon in older people and often causes no symptoms. Single nodules are also common, affecting perhaps 5% of the population – although most of those affected are not aware that there is anything wrong with their thyroid gland.

(Information on Thyroid Disease #5) – Learn more

Types of Thyroid Nodules

The single thyroid nodule is usually one of four things:

  1. a fluid-containing cyst;
  2. a degenerated benign tumour/adenoma;
  3. a slowly growing adenoma;
  4. a small percentage is malignant(5-10 %).

Because the rest of the thyroid gland is usually normal, thyroid function is normal and patients are not hyper- or hypothyroid.

Tests for Thyroid Nodules




Help us to Help Others


  • Public education programs
  • Advocacy for improved thyroid care
  • Annual June is Thyroid Month activities

Patient Support

  • Toll free telephone Help line and email access for thyroid patients
  • Thyroid Health Guides and other educational material
  • Thyrobulletin newsletter
  • site with the latest news

Thyroid Research

  • Annual Research Awards program provides funding for projects carried out in Canadian thyroid laboratories.