<s>[INST] I have had a marble sized hard nodule on my neck for 24 years.  An oncologist checked it about 6 years ago and said that is was not a lymph node and it was nothing to be concerned about unless it started botherin me.  Two years ago I had heart valve repair and started going thru menapause.  All of sudden the firm nodule gets larger, maybe not significant but large enough for me to notice and want to hide from others. What could this be? Some days the area around the marble seems puffy and then some days it not.  Also, I never remember it is there until I sleep wrong and it gets lodged under my jaw then it causes my jaw to go sleep or tingle for a few minutes.  If I poke on it for a while it will get sore but other than that I don't even know it is there. No other symptoms...no weight loss (just the opposite), no night sweats, nothing! [/INST] Hi. Read and re-read.The swelling is there for 24 years- itself itself is a guarantee for of NO cancer.Well, You can definitely go for FNAC, ultrasonography to get a diagnosis what it is.If necessary you can get it removed if easily accessible and if your Surgeon is willing to get this removed. Two benefits. - one you get rid of the disturbing lump and most important get a tissue diagnosis. </s>