Echogenic foci in thyroid nodules: diagnostic performance with combination of TIRADS and echogenic foci

BMC Medical Imaging

Table 3 Diagnostic Performance of US Characteristics for the Prediction of Malignancy in Thyroid Nodules with Echogenic Foci alone and TIRADS alone

		Total	Benign	Malignant	Diagnostic Performance
		Total	Benign	Malignant	Sensitivity	Specificity	Accuracy	PPV	NPV
Echogenic Foci	Type 1	207	54	153	60.2	60.3	60.3	73.9	44.8
	Type 2	54	12	42	27.5	77.8	40.6	77.8	27.5
	Type 3	94	41	53	20.9	69.9	37.9	56.4	32.1
	Type 4	27	16	11	4.3	88.2	33.6	40.7	33.1
	Type 5	21	14	7	2.8	89.7	33.1	33.3	33.1
	Type 6	41	11	30	11.8	91.9	39.7	73.2	35.8
TIRADS	Web-based TIRADS(≥ 8)	199	21	178	70.1	84.6	75.1	89.4	60.2
	K-TIRADS High Suspicion	226	28	198	78.0	79.4	78.5	87.6	65.9
	ATA guidelines High Suspicion	235	30	205	96.2	56.5	86.5	87.2	83.0
	Russ et al. (≥ 4B)	278	61	217	85.4	55.1	74.9	78.1	67.0

TIRADS thyroid image reporting and data system, ATA american thyroid association, PPV positive predictive value, NPV negative predictive value
Type 1 = Punctate echogenic foci (≤ 1 mm) with or without posterior shadowing
Type 2 = Punctate echogenic foci with comet-tail artifact
Type 3 = Large echogenic foci (> 1 mm) without shadowing
Type 4 = Macrocalcification (defined as large echogenic foci (> 1 mm) with shadowing)
Type 5 = Peripheral curvilinear or eggshell echogenic foci with or without shadowing
Type 6 = Nodules with more than one type of echogenic foci

ISSN: 1471-2342