Effect of Micro wave Ablation for the Treatment Of Unifocal Papillary Thyroid Microcarcinoma
Objective:To investigate the therapeutic effect of microwave ablation of solitary micropapillary thyroid carcinoma.Methods:A retrospective analysis was performed in 72 patients with micropapillary carcinoma of the thyroid treated by microwave ablation.The ablation range and volume of necrotic lesion were evaluated by contrast-enhanced ultrasound immediately after sur-gery.Routine ultrasound examination was performed at 1,3,6 and 12 months after operation to observe the absorption of the le-sions,and compare the volume,volume reduction rate and thyroid function of the lesions.According to the maximum diameter of nodules,the nodules were divided into diameter＞5 mm and diameter ≤5 mm.The volume reduction rate of lesions was com-pared to observe whether there were new lesions and lymph node metastasis.Results:At 1,3,6 and 12 months follow-up,the volume reduction rates were 37.3％,73.5％,91.5％and 100.0％,respectively,with statistical significance(P＜0.05).The size reduction rate of nodules with maximum diameter＞5 mm was lower than that of nodules with maximum diameter ≤5 mm,and the difference was statistically significant(P＜0.05).There was no statistically significant change in thyroid function between 1 month after surgery and before surgery(P＞0.05),and no new lesions or cervical lymph node metastases were found at 1-year follow-up.Conclusion:Microwave ablation is effective in the treatment of solitary micropapillary thyroid carcinoma,and the smal-ler the size,the faster the absorption.
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