Objective To observe the value of ultrasound,CT and the combination for evaluating thyroid cancer(TC)involved peripheral structures.Methods Totally 102 patients with advanced TC were enrolled,and the value of ultrasound and CT for evaluating TC involved peripheral structures were analyzed taken post resection pathology as gold standards.Results The ultrasonic detection rate of TC involved laryngeal recurrent nerve and strap muscle was 47.37％(18/38)and 72.73％(24/33),while the CT detection rate was 15.79％(6/38)and 39.39％(13/33),respectively,the formers were better than the latters(both P＜0.05).Ultrasound had high sensitivity(88.24％),specificity(97.06％),and accuracy(94.12％)for diagnosing TC involved trachea,also had fair sensitivity(72.73％,72.73％),high specificity(96.70％,97.10％)and accuracy(94.12％,89.22％)for diagnosing TC involved thyroid cartilage and strap muscle.CT had high sensitivity(90.91％),specificity(92.31％)and accuracy(92.16％)for diagnosing TC involved thyroid cartilage,while had fair sensitivity(50.00％—76.47％)and high specificity(82.35％—88.46％)for diagnosing TC involved trachea,esophagus and blood vessels.The sensitivity and accuracy of combination of ultrasound and CT for evaluating TC involved peripheral structures were both higher than of each single method alone.Conclusion Combination of ultrasound and CT was valuable for evaluating TC involved peripheral structures.

Objective To observe the value of ultrasound,CT and the combination for evaluating thyroid cancer(TC)involved peripheral structures.Methods Totally 102 patients with advanced TC were enrolled,and the value of ultrasound and CT for evaluating TC involved peripheral structures were analyzed taken post resection pathology as gold standards.Results The ultrasonic detection rate of TC involved laryngeal recurrent nerve and strap muscle was 47.37％(18/38)and 72.73％(24/33),while the CT detection rate was 15.79％(6/38)and 39.39％(13/33),respectively,the formers were better than the latters(both P＜0.05).Ultrasound had high sensitivity(88.24％),specificity(97.06％),and accuracy(94.12％)for diagnosing TC involved trachea,also had fair sensitivity(72.73％,72.73％),high specificity(96.70％,97.10％)and accuracy(94.12％,89.22％)for diagnosing TC involved thyroid cartilage and strap muscle.CT had high sensitivity(90.91％),specificity(92.31％)and accuracy(92.16％)for diagnosing TC involved thyroid cartilage,while had fair sensitivity(50.00％—76.47％)and high specificity(82.35％—88.46％)for diagnosing TC involved trachea,esophagus and blood vessels.The sensitivity and accuracy of combination of ultrasound and CT for evaluating TC involved peripheral structures were both higher than of each single method alone.Conclusion Combination of ultrasound and CT was valuable for evaluating TC involved peripheral structures.