Value of contrast-enhanced ultrasound in the differential diagnosis of gallbladder lesion

Table 1 Diagnostic results of conventional ultrasound n (%)

	Benign		Malignant
	definitely	probably	probably	definitely
Benign, n = 88	61 (69.3)	18 (20.5)	8 (9.1)	1 (1.1)
Malignant, n = 17	0 (0)	3 (17.6)	5 (29.4)	9 (52.9)

Table 2 Diagnostic efficiency of conventional ultrasound and contrast-enhanced ultrasound between benign and malignant gallbladder lesions n (%)

Features of lesions	Sensitivity	Specificity	Positive predictive value	Negative predictive value	Accuracy
Conventional ultrasound	82.4	89.8	60.9	96.3	88.6
Contrast-enhanced ultrasound	94.1	95.5	80.0	98.8	95.2
P value	0.301	0.124	0.152	0.297	0.064

Table 3 The Diagnostic results of contrast- enhanced ultrasound n (%)

	Benign		Malignant
	Definitely	Probably	Probably	Definitely
Benign, n = 88	78 (88.6)	6 (6.8)	4 (4.5)	0 (0)
Malignant, n = 17	0 (0)	1 (5.9)	6 (35.3)	10 (58.8)