I have a lump in my neck however the ent said it is a swollen lymph node, why is it swollen and how do i fix it?

Removal: There are 300 lymph nodes in the head and neck and all respond to infection. Persistent swelling over 4 weeks is worrisome. Temporary swelling is not. Needle biopsy or excision can be diagnostic.

Monitoring Centers: Lymphatic system absorbs/carries things too big to go into the arteries/veins like bacteria eaten by white cells and digested food. Lymph nodes "taste" the lymph for anything bad like bacteria/viruses/cancers, etc. When it detects a problem, it alerts the immune system and your body reacts. They enlarge in response to the inflammation they create when they react. They shrink when all is well.