A 1-centimeter lymph node in the right neck lasts for several years and usually has no effect if there are no symptoms and no change in size. A 1 cm lymph node in the right neck may be a normal physiological lymph node, no pain in the lymph node, no uncomfortable symptoms in the body, and no change for several years is normal, no need to worry and treatment. If the lymph nodes in the neck suddenly appear to be enlarged, most of them are related to inflammation, and only a small part of them are related to tumors. If symptoms occur, there is no need to worry too much, and you should go to the hospital and do the necessary tests, so that your doctor can determine whether you need to be treated and take intervention measures. If you have any uncomfortable symptoms, you should go to the hospital and follow the doctor’s instructions.