Figure 14b. Pancreatic pseudocyst in a 49-year-old man with a history of chronic alcoholism. (a) Contrast-enhanced CT scan shows a thin-walled fluid collection in the anterior pararenal space (arrow). Percutaneous drainage of retroperitoneal fluid was performed, and 90 mL of dark yellowish fluid was removed. (b) Fluoroscopic image shows a cavity filled with contrast material, which had been injected through a catheter.