**What is a thyroid cyst?** Thyroid cysts are fluid-filled cavities or masses. Typically, thyroid cysts are benign and non-cancerous. In about 15% of cases, thyroid cysts resolve without any medical intervention. Thyroid cysts may be larger or smaller than 1 cm and sometimes appear quite suddenly. Thyroid is formed due to sudden bleeding inside them, they are different.... ### **Types of thyroid cysts ** Thyroid cysts include two types of cysts and are defined and classified based on what is inside the cyst.. - **Cyst filled with liquid** These types of thyroid cysts are completely filled with fluid like pus-filled pimples. These cysts are almost always benign or non-cancerous... - **complex cysts** Complex cysts, which are also called echogenic nodules, have liquid and solid components. In most cases, these types of cysts are cancerous. But the possibility of the cyst being cancerous depends on its composition. If most of the cyst content is liquid, the risk of cancer is less than 5%. Unfortunately, despite the increasing progress, medical science has not yet discovered the main cause of thyroid gland cysts and relies only on possibilities. Generally, cysts occur when the ducts are blocked. and fluids are trapped in one area.. In addition, cyst growth is related to the activity of hormones.. Thyroid cysts do not experience any symptoms. - Respiratory problems - Swallowing disorder - Change in sound - Feeling lump and pain in the neck area ### **Does a thyroid cyst hurt?** Cysts that are expanding rapidly can have specific symptoms.... The presence of a significant lump in the neck, pain, difficulty swallowing and rarely voice changes are some of the symptoms of these cysts.... Cysts that are completely filled with fluid have a much lower risk of developing thyroid cancer compared to cysts that have solid components. Tests to make sure... These tests are very important to better understand the nature of the cyst and choose the right treatment option. This test determines whether the cyst is fluid-filled, complex, benign, or cancerous. - Ultrasound - Sampling (biopsy) - Thyroid scan #### **sonography** Thyroid cysts are often diagnosed during ultrasound.. Ultrasound can provide important information about the composition of cysts... #### **Sampling** If your doctor sees something concerning on the ultrasound, you may decide to do a fine needle aspiration biopsy. In this procedure, a very small, fine needle is inserted through the neck into the cyst. The needle is then guided by the ultrasound images. If the doctor finds that the thyroid cyst is complicated, he will order a thyroid scan to determine if the cyst is producing thyroid hormones.. If the cyst produces thyroid hormones, it is known as an active or toxic nodule and can cause hyperthyroidism.. About 15% of thyroid cysts resolve on their own and usually do not require treatment.. But if the cyst is cancerous and causes symptoms, the doctor may decide to remove it. Take it. Common treatments for thyroid cysts include: #### *monitoring and viewing changes** In most cases, if the cyst is **less than 3 cm** and is not cancerous, the doctor will leave it alone. The doctor may determine that it is better to drain the cyst through aspiration, which is similar to a fine needle biopsy... but if the cyst is drained, it will recur 60 to 90% of the time. To read about when thyroid cyst surgery is recommended, click on the article link below.. Is thyroid cyst surgery necessary?

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