[Application of carbon nanoparticle in neck Ⅵ lymph node dissection for papillary thyroid carcinoma].

Objective: To investigate the application value of carbon nanoparticle lymph tracer in Ⅵ lymph node dissection for papillary thyroid cancer. Method: One hundred and forty-eight patients with papillary thyroid cancer from October 2015 to May 2016 were enrolled into the retrospective analysis. Seventy-five cases with carbon nanoparticle injected in operation were divided into observation group, while the other seventy-three cases without lymph tracer were divided into control group. The number of neck Ⅵ lymph nodes and metastatic lymph nodes between the two groups were compared, as well as the incidence of parathyroid injury and postoperative hypocalcemia. Result: There were no significant difference in age, gender, tumor size, pathology or type of operation between the two groups( P >0.05). Parathyroid injury incidence in the observation group significantly lower than the control group (5.33% vs 5.33%, P < 0.05). There was significant difference in the number of neck Ⅵ lymph node dissection between the two groups (observation group: 6.51±4.65, control group: 4.42±3.10, P < 0.05). Conclusion: Carbon nanoparticle injected as a lymph tracer in thyroid surgery is helpful, the characteristics of the parathyroid gland negative imaging can effectively decrease the rate of parathyroid gland injury.