Thank you for asking your query at DoctorSpring.
From what I understand this knot - possibly a lymph node was there for an year with out any change (or without any symptoms either) . This mostly suggests that this lymph node is not a big concern. Had it been related to a malignancy there would have been definite increase in size of the node , with more nodes getting involved and other symptoms.
Lymph nodes are normal glands in human body and they are supposed to enlarge in case of infections , inflammations etc.
Being said that it is prudent to evaluate the node in that particular portion of the neck and make sure that it is safe. CT is a good option, even better is to do a FNAC ( a simple aspiration biopsy using a needle). You can discuss this option with your Doctor.
Hope this helps
Feel free to ask followups.