Thyroid tumor and thyroid cancer are mainly differentiated by malignant and benign, symptoms, and treatments. 1. Malignant vs. benign: thyroid adenoma is usually a benign tumor with single or multiple presence; while thyroid cancer is a kind of common malignant tumor, including papillary thyroid cancer, follicular carcinoma, medullary carcinoma, undifferentiated carcinoma and so on. 2. Symptoms: Patients with thyroid tumor usually have no obvious symptoms, but some of them may have symptoms such as coughing and difficulty in swallowing due to the enlargement of the tumor, which presses and stimulates the throat; while patients with thyroid cancer may have symptoms such as neck lumps, eyeballs inwardly sunken in, and pressure on the surrounding tissues and organs, and so on. 3. Treatment: Thyroid tumor is usually treated by total or partial removal of thyroid gland. Thyroid cancer requires not only surgery, but also iodine 131 treatment, levothyroxine tablet replacement therapy and other therapeutic measures. Thyroid disease is a kind of disease that seriously harms the body, no matter whether it is a tumor or cancer, you should go to the hospital in time for examination and correct treatment under the doctor’s determination.