Dr. P. Shanmuga Sundaram, Head, Department of Nuclear Medicine & PETCT, Amrita Institute of Medical Sciences, (AIMS) detailed about Thyroid Cancer. Dr. Sundaram says that there are four main types of thyroid cancer, of which papillary and follicular types account for about 90% of all thyroid cancer cases. The other two types (medullary and anaplastic) are rarer. A patient under surveillance undergoes radioiodine scan six months after the radioiodine treatment along with a specific blood test i.e. The third step in thyroid cancer management is to monitor progress and rule out any remaining cancerous cells in the body. Thyroid cancer falls in this category and its incidence is now growing faster in India. It is a very safe and effective form of therapy for papillary, follicular varieties of thyroid cancer.