Complications and expected imaging findings after endoscopic retrograde cholangiopancreatography

Figure 8 Pyogenic liver abscess. A and B: Axial (A) and coronal (B) contrast-enhanced computed tomography images demonstrated pyogenic liver abscess secondary to endoscopic retrograde cholangiopancreatography in a 76-year-old female patient. She presented 2 months after endoscopic retrograde cholangiopancreatography with abdominal pain, nausea, elevated acute phase reactants, and leukocytosis. A hypodense lesion corresponding to the abscess was apparent in the right hepatic lobe (orange star). Surrounding edema and increased perfusion were also noted. This imaging appearance represents the double target sign (blue arrows).