Medicines for Thyroid nodule

What it is

A thyroid nodule is a lump within the thyroid gland — the butterfly-shaped gland at the front of the neck that controls metabolism. Thyroid nodules are very common, becoming more so with age, and are often found by chance — either felt as a lump in the neck, or discovered on a scan done for another reason. The great majority of thyroid nodules are benign (non-cancerous) — for example fluid-filled cysts, or areas of overgrowth of normal thyroid tissue. Most nodules cause no symptoms and do not affect thyroid function. However, nodules are assessed for two main reasons. First, some nodules produce thyroid hormone and can cause an overactive thyroid (a "hot" or toxic nodule), while others may be associated with an underactive thyroid, so thyroid function is checked. Second, and importantly, although only a small proportion of thyroid nodules are cancerous, it is not possible to tell from feeling or seeing a nodule alone whether it is benign or one of the few that are cancer — so nodules are assessed to identify the small number that need treatment. Reassuringly, thyroid cancers, when they do occur, are often very treatable, particularly when found early. Certain features (such as a hard, fixed, or rapidly growing nodule, voice changes, or a nodule with certain scan or risk features) raise the level of concern and prompt closer assessment.

How it is treated

A thyroid nodule is assessed in a structured way to check thyroid function and to determine whether it is benign or needs treatment. A doctor examines the neck, and arranges thyroid function blood tests (to check for an over- or underactive thyroid) and usually an ultrasound scan of the thyroid, which shows the nodule's characteristics and helps judge how likely it is to be significant (using established scoring systems). Where the ultrasound or clinical features suggest a nodule needs further assessment, a fine-needle biopsy (taking a small sample of cells with a thin needle, often guided by ultrasound) is done to examine the cells and determine whether the nodule is benign or of concern — this is the key test for distinguishing benign from potentially cancerous nodules. Based on all of this, the approach is decided: many benign nodules simply need monitoring (or no further action), while nodules found to be, or strongly suspected to be, cancer, or those causing problems (such as an overactive thyroid, or a large nodule pressing on the neck or affecting swallowing, breathing or appearance), are treated — for example with surgery, or specific treatments for an overactive nodule. Thyroid cancers are treated by specialist teams and are often very treatable. The reassuring message is that thyroid nodules are very common and usually harmless, and that they are assessed in a structured way (function tests, ultrasound, and biopsy where needed) to identify and treat the small number that are significant — so a thyroid lump should be checked, but most turn out to be benign.