The severity of a thyroid nodule 1.2*0.6cm depends on the nature of the nodule. If it is benign, this size is usually not too serious, but requires regular review; if it is malignant, it is more serious. 1. Benign nodules: thyroid nodules 1.2 * 0.6cm small size, usually no clinical symptoms, the general physical examination can not be judged, only in the imaging can be observed, and is not too serious performance. 2. malignant nodules: thyroid nodules 1.2 * 0.6cm if malignant, usually more serious, its growth rate may be very fast, and may have the surrounding lymph nodes enlargement, need to be treated as soon as possible. It is worth noting that for patients with thyroid nodules, it is recommended to go to the hospital in time for examination and clear diagnosis.