In general, 5-10 % of the nodules are malignant. There is a higher risk of thyroid cancer in a nodule when it is seen in people with certain risk factors:
1.It is more in women than in men.
2.It is more likely to be cancerous when it occurs in a child than in an adult.
3.Certain cancers like Medullary Cancer of thyroid can run in families.
4.Having a first degree relative with cancer increases the risk of cancer.
5.Being obese increases the risk of thyroid cancer.
6.The iodine status may change the type of cancer.
7.Having received radiation to the neck is a risk factor for thyroid cancer.
During the visit to an endocrinologist, it is important to discuss these risk factors if you have any. This will help in making better decisions in managing your thyroid nodule.