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

Figure 1 Gallbladder sludge in a 54-year-old female patient. A: B-mode sonography showed a hypoechoic, well-defined mass in the gallbladder, with an intact gallbladder wall; B: Color Doppler ultrasound showed no color Doppler signal in the lesion. According to A and B, a diagnosis of probably benign was made; C: CEUS showed complete nonenhancement on arterial phase; D: CEUS showed complete nonenhancement on venous phase. According to C and D, a diagnosis of benign gallbladder sludge was made. CEUS: Contrast-enhanced ultrasound.