Hi I am a 55 year old woman. I have a lump on the left side of my neck between my chin and collar bone its internal it has been growing for about a ye?

Needs to be checked. You have had this lump and it seems to be growing bigger.I think it is about time you consult a doctor to find out what it is from and appropriately treated.It may be an enlarged lymph node,a cyst,or another kind of tumor.It definitely needs to be checked,investigated and treated.