Diagnostic value of contrast-enhanced ultrasonography in the preoperative evaluation of lymph node metastasis in papillary thyroid carcinoma: a single-center retrospective study

Table 3 Diagnostic accuracy of CEUS for LNM in PTC patients

	Specificity, %	Sensitivity, %	PPV, %	NPV, %	Accuracy, %
All patients(n = 965)	56.00	71.00	57.06	69.76	62.59
HT patients Yes(n = 231) No (n = 734)	51.69 56.62	62.68 75.34	67.42 54.00	46.46 77.26	58.44 64.17
PTMC patients Yes(n = 627) No (n = 338)	61.52 36.13	60.73 81.74	45.86 70.20	74.48 51.81	61.24 65.68
CLND patients(n = 965)	47.98	58.06	27.85	77.33	49.43
LLND patients(n = 407)	45.62	64.21	50.83	59.28	54.30

CEUS, contrast-enhanced ultrasound; LNM, lymph node metastasis; HT, Hashimoto’s thyroiditis; PTC, papillary thyroid carcinoma; PTMC, papillary thyroid microcarcinoma; CLND, central lymph node dissection; LLND, lateral lymph node dissection; PPV, positive predictive value; NPV, negative predictive value

ISSN: 1471-2482