A lump in the neck is most often seen as a soft tissue mass, such as inflamed lymph nodes, enlarged lymph nodes, or possibly a lipoma or sebaceous cyst. Other diseases of the thyroid gland, such as thyroid nodules or thyroid cancer, may also cause localized masses. In this case, it is necessary to go to the hospital for an interview with the doctor, who will analyze the source of the mass and improve the local ultrasound examination. For swollen lymph nodes, further examination, such as a puncture biopsy, is required. If it is just a general inflammation of lymph nodes, anti-inflammatory drugs such as cephalosporin can be chosen for treatment. If it is a lipoma or sebaceous cyst, surgical treatment is an option. If it is a thyroid-related disease, surgery needs to be considered if necessary, and the treatment plan will be determined based on the results of the puncture biopsy.