Pseudomyxoma Peritonei (PMP)

What is pseudomyxoma peritonei (PMP)?

Pseudomyxoma peritonei is a condition that starts in the appendix (usually) and affects the peritoneum, a layer of tissue which lines the inside of the abdomen.

How rare is PMP?

PMP occurs in approximately 3.2 people per million. 

Who does PMP affect?

PMP is can affect people at any age but it is more common in adults. It is slightly more common in women than it is in men. 

Why is RareCan interested in PMP?

RareCan is working to accelerate research into pseudomyxoma peritonei by making it easier for researchers to connect with people who have this rare condition. You can help us do this by becoming a RareCan member and sharing information with us about your diagnosis. We will then get in touch with you about any research opportunities that might be suitable for you.

Looking for a different cancer type?

Please visit our ‘rare cancer list’ to search for your cancer type 

Useful links

If you are looking for further support with PMP we recommend the following websites:


Pseudomyxoma Survivor

Pseudomyxoma Survivor is a non-profit aiming to fund research and provide emotional support to those affected by PMP, appendix cancer and other peritoneal cancers. It is run by patients and caregivers.