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.

Pseudomyxoma peritonei (PMP) is a rare cancer that usually starts in the appendix. It’s normally slow-growing and makes a jelly-like liquid called mucin. 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.

The overall chance of chemotherapy being curative is still low, and the side effects are difficult for the patient to endure. However, when these cancers are confined to the peritoneal cavity, Hyperthermic Intraperitoneal Chemotherapy (HIPEC) becomes an option for candidate patients. It is important that patients discuss HIPEC with their oncologists and surgeon who can guide their therapy appropriately.