<s>[INST] I have a slightly enlarged lump on the left side of my neck, which has been there for about a week. I am a very healthy person, I hardly ever get sick. My roommates were just sick with colds so Im thinking this could be from my body fighting of a cold before it starts. I am experiencing no other symptoms. My friend is also a student nurse and she felt my neck and said it feels normal. Should I be worried? Can a lymph node be naturally larger than the other? [/INST] Welcome to Chat Doctor .1. The history given by you suggest the lymph nodal enlargement.2. Lymph nodal enlargement is seen after any infection / inflammation - it can be localized or systemic. 3. Lymph nodes can be of any size as they grow.4. Confirmatory is an ultrasound neck which will help to assess the nature of the lumps and its source and where all they are extending.5. In this case treat the cause if you are aware of anything, if not then lymph nodal pathology itself can be possible, also scan results can be followed. Good luck. Hope it helps you. Wish you a good health. Anything to ask ? Do not hesitate. Thank you. </s>