I have oral cancer and currently I am awaiting surgery to remove it. The lymph node can swell from other things as well. IE: Infection. The main job they have is to filter bad things from the body. This does not mean you have cancer. According to MY Doctor, he says most people who get it is in the 40 age group. If it is a concern, you should go see an ENT to at least rule it out. If it turns out to be so, EARLY detection is the key to the best eradication of the disease.