Benign gallbladder diseases: Imaging techniques and tips for differentiating with malignant gallbladder diseases

Figure 4 Cholesterol polyp. A: Single, echogenic, broad-based, mass-like lesion in proximal body of gallbladder on ultrasound; B: Internal vascularity not evident by color Doppler ultrasound; C: Small enhancing intraluminal lesion of gallbladder on computed tomography; D: no broad base, and mosaic pattern of weak enhancement revealed by contrast-enhanced endoscopic ultrasound using Sonovue (lesion confirmed as cholesterol polyp).