The role of ultrasound in the tirads category for the thyroid focal lessions

Vu Tat Giao1, Nguyen Duy Hue2,
1 Department of Diagnostic Imaging, Hanoi Oncology Hospital
2 Department of Diagnostic Imaging, Viet Duc Hospital

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Abstract

SUMMARY


Purpose: To describle the lesion of thyroid cancer on the ultrasound and study the value of US with TIRADS category on thyroid local lessions compare the pathology.
Material and Methods: A total 307 thyroid nodules of 272
patients (146 malignant nodules on the 146 patients, 161 benign nodules on the 126 patients), who underwent thyroid ultrasound examintation. Each observer describle each with TIRADS by G.Russ (2013) terminology and assigned with final TIRADS category, and compared with pathologic resultn for evaluation value.
Result: Usual individual sonographic criterias are: The nodules with hypoechonic: Se = 80.82%; Sp = 59.01%, mark hypoechonic: Se = 16.44%, Sp = 98.76%, shape are depth ³ wide: Se = 69.86%; Sp = 94.41%, not circumscribed magrins: Se = 77.4%; Sp = 92.55%, microcalcification: Se = 69.18%; Sp = 97.52%. Value of TIRADS category for the thyroid cancer in this study is: Se = 97.95%; Sp = 89.44%; PPV = 89.37%; NPV = 97.96%, Acc = 93.49%.
Conclusion: High-resolution thyroid US is the most useful
diagnostic tool for evaluating thyroid nodules. Criterias malignant thyroid nodule in the TIRADS using practical are: Hypoechonic, mark hypoechonic, taller than wide, not circumscrible margins and microcalcification.

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References

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