Morning everyone, my 14 year old DD found a large lump on her neck quite a few weeks ago which she only told us about last week, she didn't want to upset me - I'm recently recovering from breast cancer. Anyway got her to the doctor who is sending her for an urgent scan, bloods and this morning we are going for an ECG. She thinks that it is the thyroid gland that is swollen as she can feel it but didn't really say much more. I'm trying not to worry about it but does all sound concerning, DD has lost weight recently but she has been healthy eating and doing more exercise, and feeling a bit dizzy which I put down to lack of iron? I assume this could mean an over or under active thyroid gland? Thanks xx