Hello! If there are no other syptoms you probably have nothing to worry about. Just by what you have written it sounds to me like an epidemal cyst, commonly called sabaceous cysts. I had on my side a few years ago. I know people that have them and have never had anything done with them and are just fine and healthly. My became infected because it sat just under the band for my bra and I keep rubbing it open. I went in to have it looked and the doctor poked it with a small needle and it came right out no problem and no problems since.
Hi
Welcome to the MedHelp forum!
Yes, it could be a lymph node. You may not have been sick but local infections like dandruff or a dermatitis too can cause a lymph node to swell. It could also be a post inflammation of tonsil surgery causing this. Another possibility is that it a cyst or a neurofibroma (localized harmless swelling in of nerve and connective tissue). All these are harmless swellings. However since there is an increase in size, it is better to get it investigated. It may not be cancer but definitely there is an inflammation may be caries in tooth or something like that.
Hope this helps. It is difficult to comment beyond this at this stage. Please let me know if there is any thing else and do keep me posted. Take care!
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