Nodules grow due to an overgrowth of cells in the affected area.
Understanding Nodule Growth
Nodules are lumps or bumps that can develop in various parts of the body. In the case of thyroid nodules, specifically, the growth is caused by an excessive proliferation of cells within the thyroid gland itself. This overgrowth can manifest in several ways, leading to different types of nodules.
Types of Nodule Growth and Causes:
- Benign Nodules: These are non-cancerous growths. The exact reasons for their development are often unknown, but factors like iodine deficiency, inflammation, and genetic predisposition may play a role.
- Malignant Nodules (Thyroid Cancer): These are cancerous growths. While the precise causes of thyroid cancer are not always clear, factors such as genetics, radiation exposure, and family history can increase the risk.
- Other Causes: In rare instances, nodules might result from other cancers that have metastasized to the area or from infections.
The reference material states that thyroid nodules are caused by “an overgrowth of cells in the thyroid gland”. This overgrowth can be benign (non-cancerous), malignant (cancerous), or, infrequently, caused by other factors. Understanding the specific cause requires medical evaluation.
