An Giang resident Thuy Linh, 35, has been living with thyroid cancer for a year without undergoing surgery. Recently, she has been experiencing a sore throat and difficulty swallowing, prompting her to worry about the possibility of metastatic disease. The thyroid gland plays a crucial role in regulating metabolism, blood pressure, and other bodily functions. When left untreated or not treated properly, cancer cells can invade nearby structures such as muscles, esophagus, trachea, larynx, and blood vessels in the neck. These cancer cells can also metastasize to lymph nodes and distant areas like bones, brain, liver