In Endocirine Journal 2013, 60(1), 113117 Ito and his colleagues show that tumor size is the strongest predicitor of microscopic lymph node metastasis and lymph node recurrence of N0 papillary thryoid cancer.  He recomends lymph node dissection for papillary carcinomas  that are greater than 2 cm.  What the article does not prove is that  lymph node dissection increases long term survival. I would suggest that the  recomendation be carefuly discussed with your surgeon prior to surgery.