Hi. If that lump has been there for the past four years and hasn't grown in size or caused any other symptom, then it's most probably non-cancerous and should not be cause for worry. That lump may either be a lymph node, or uncommonly, a thyroglossal duct cyst. The thyroid gland, early in development, is located higher up in the neck, and comes down slowly through a tract as a person grows older. Sometimes, this tract does not close completely and eventually fills up with fluid and becomes a cyst. Thyroglossal duct cysts usually don't cause any symptoms unless they become infected, so there's no need to remove them immediately.