peritoneum cancer peritoneal carcinomatosis https://github.com/monarch-initiative/mondo/issues/8481 UMLS:C0346990 icd11.foundation:1523083931 NCIT:C27382 peritoneal carcinomatosis Cancer in which a carcinoma, usually of the digestive tract or female reproductive organs, has spread extensively throughout the peritoneum and causes tumors to grow on the peritoneum. Peritoneal carcinomatosis can happen in many types of cancer, but it is most common in people with cancers of the ovary, colon, rectum, stomach, pancreas, or appendix. abdominal carcinomatosis MONDO:0700336 carcinomatosis of the peritoneum MEDGEN:577752