Ct scan: swollen neck lymph node for 2 mths. dr said reactive of benign nature and to f/u in 3 mths. insist biopsy?

Up to you: It us up to you, but you could also get a second clinical opinion before you go for a biopsy.

Depends on imaging: The node's characteristics matter most, and that can only be determined by reviewing the actual images. A neck ct can be submitted to http://conciergeradiologist.Com in the next few weeks for an assessment that would better be able to answer your question.