Fig. 13

Failed conservative treatment of DP in an 83-year-old male with chronic duodenal stricture who underwent ERCP to prevent further episodes of infectious cholangitis. The next day, contrast-enhanced CT (a) showed moderate right-sided retroperitoneal gas (*). Follow-up CT (b, c) 4 days later showed formation of multiple confluent periduodenal and right parietocolic fluid-like infected collections (+), with extensive occupation of the ipsilateral posterior pararenal space, which required percutaneous drainage (d) to relieve sepsis