 A systematic analysis of CT imaging features is helpful to narrow down the differential diagnosis, staging and effectively guiding the patient management.The peritoneum is a mesothelial lining covering the abdominal cavity (parietal peritoneum) and intraperitoneal
organs (visceral peritoneum).Peritoneal cavity contains a small amount of fluid, which circulates under the
influence of negative pressure generated by the diaphragm, gravity and bowel peristalsis.