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NCI Dictionary of Cancer Terms

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NCI Dictionary of Cancer Terms



peritonitis  listen  (PAYR-ih-tuh-NY-tis)

  Inflammation of the peritoneum (tissue that lines the abdominal wall and covers most of the organs in the abdomen). Peritonitis can result from infection, injury, or certain diseases. Symptoms may include swelling of the abdomen, severe pain, and weight loss.