Hi Walter I had exact same dx as you, first they dx'd branchial cyst, fine needle came back negative when they operated to remove cyst biopsy showed it was actually cancerous lymph node, they removed eight of mine with two others involved. Mine was strain HPV 16, David is right get a second opinion, in Canada standard treatment is chemoradiation with mine they only used radiation due to size and unknown primary. They are doing some robotic surgery up here for known primary on bot which can give you option for rads later if it recurs, good luck with your journey....ken