The thyroid may contain just one nodule or several of them (multinodular goiter).
Mainly, the benign thyroid nodules can be grouped into two categories, including:
- Non-functioning thyroid nodule:
Non-functioning nodules can sometimes appear as “cold spots” on scans, which is indicative of non-functioning tissue in the thyroid gland.
A cold or non-functioning nodule carries higher cancer risk than a normal or hyper-functioning nodule.
In most cases there are two groups of non-functioning thyroid nodules:
- Cystic / complex thyroid nodules:
When nodules contain fluid, they are called cystic nodules. These can be completely fluid-filled (simple cysts) or partly solid and partly fluid-filled (complex cysts).
Cystic nodules are usually benign and cause no trouble.
If they become symptomatic and bothersome, your doctor will refer you for thyroid cyst treatment to prevent the growth and any complications.
Treatment of cystic thyroid nodules includes non-surgical options such as ethanol ablation/sclerotherapy or surgical removal.
Thyroid nodules can be solid if they are composed predominantly of thyroid follicular cells. When large enough and symptomatic, they can be treated with surgery or non-surgical radiofrequency ablation.
- Hyperfunctioning thyroid nodule:
A hyperfunctioning thyroid nodule (hot nodule) is a nodular region of the thyroid gland which secretes excess thyroid hormone. It is visualized as a “hot spot” on thyroid scans. They can cause swelling in your neck and lead to breathing and swallowing difficulties, pain, and goiter.
Treatment of hyperfunctioning thyroid nodules includes non-surgical options such as radiofrequency ablation and radioactive iodine treatment, or surgical removal.
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