[(SOO-doe-mix-O-ma PAIR-ih-TOE-nee-I) A build-up of mucus in the peritoneal cavity. The mucus may come from ruptured ovarian cysts, the appendix, or from other abdominal tissues, and mucus-secreting cells may attach to the peritoneal lining and continue to secrete mucus. ( NCI )]
UMLS (NCI) C0033822 Relation/PAR: Neoplasms, Cystic, Mucinous, and Serous