Complications and expected imaging findings after endoscopic retrograde cholangiopancreatography

Figure 1 Typical imaging findings of air and contrast material in the biliary system after endoscopic retrograde cholangiopancreatography. A and B: Coronal (A) and axial (B) noncontrast computed tomography images showed normal post-intervention findings in a 70-year-old female patient. The patient underwent endoscopic retrograde cholangiopancreatography for choledocholithiasis. Despite having normal post-procedural laboratory values, she presented with abdominal pain and mild guarding upon physical examination. Air was present within the intrahepatic bile ducts and gallbladder (orange arrow). Contrast material used during the endoscopic retrograde cholangiopancreatography was visualized as layering within the intrahepatic bile ducts (blue arrow) and the gallbladder (yellow arrow).