Summary: Your peritoneum is the tissue that lines your abdominal wall and covers most of the organs in your abdomen. A liquid, peritoneal fluid, lubricates the surface of this tissue.Disorders of the peritoneum are not common. They include peritonitis - an inflammation of the peritoneum,cancer,complications from peritoneal dialysis. More >> Less >>

Reference Material:
https://medlineplus.gov/peritonealdisorders.html