Hi,

My son has had a lump on his neck for over 12 months. We saw the GP last February and he arranged an ultrasound in April 2024. A few weeks later I received a call from the GP advising that it was a sebaceous cyst and that they would refer us to dermatology to have it removed. Fast forward 10 months for our appointment with dermatology… we saw them on Tuesday and the consultant advised that it isn’t a sebaceous cyst, she had no idea what it is. She said that it had some vascularity and that she didn’t think it was a lymph node either. She did say she didn’t think it was anything sinister but I’m left wondering if they don’t know what it is how can they say it’s not sinister? 
she asked if we would like it removed and to be referred to ENT. 
I queried whether it was likely to grow to which she did not know the answer not knowing what it actually is. Am I wrong for worrying? My son is only 13 and suffers with daytime sweating too (no night sweats) .