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

Table 5 Diagnostic sensitivity of different diameter ranges of LNM in PTC patients

Lymph node diameter(cN1)(mm)	Postoperative pathology		Total(%)	Sensitivity, %
Lymph node diameter(cN1)(mm)	+		Total(%)	Sensitivity, %
> 0 and ≤ 5	36	23	59(13.47)	61.02
> 5 and ≤ 10	146	73	219(50)	66.67
> 10 and ≤ 15	62	26	88(20.09)	70.45
> 15 and ≤ 20	34	2	36(8.22)	94.44
> 20	34	2	36(8.22)	94.44
Total	312	126	438(100)	71.23

LNM, lymph node metastasis; PTC, papillary thyroid carcinoma; cN1, clinical-node positive

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