Generally speaking, a lump with a diameter of more than 10 mm should be operated, but we often relax the indication to 15 mm; secondly, the nodule should be operated if it has calcification, papillary hyperplasia, or rich blood supply. Surgery is also recommended for males, especially adolescent males with solitary nodules. You are a female with a nodule 5x4mm in size. If there is no significant calcification, follow-up with ultrasound every 3-6 months is recommended. It is recommended to check thyroid function to see the TSH level and decide if oral eugenol is needed to suppress the nodules. You should avoid high iodine food intake in general. The results of surgical treatment of thyroid tumors are all relatively satisfactory. Patient: Description (onset time, main symptoms, hospital visited, etc.): Last year, I was detected during my company’s physical examination, but I didn’t care about it at that time, and I consulted the doctor during the physical examination and said it didn’t matter. How should I treat my disease? Is it curable? Also, is it thyroid cancer like me?