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What is Pseudomyxoma Peritonei?

Pseudomyxoma peritonei is a rare slow-growing cancer with jelly-like tumors that affects the abdominal lining.
3 min read

Pseudomyxoma Peritonei (PMP) is a rare type of cancer that affects the lining of the abdominal cavity, known as the peritoneum. This cancer is characterized by the presence of mucinous (jelly-like) tumours that grow on the peritoneum and can spread to other organs within the abdomen. PMP is a slow-growing cancer that can take years to develop and can be difficult to diagnose due to its nonspecific symptoms.


The exact cause of PMP is not well understood. However, it is thought to be caused by the abnormal growth of mucin-producing cells in the appendix, colon, or ovaries. These abnormal cells can then spread to the peritoneum and form tumours. PMP can also be caused by other types of cancer, such as ovarian or colon cancer, that have spread to the peritoneum.


The symptoms of PMP can be vague and non-specific, making it difficult to diagnose. Some common symptoms include abdominal pain, bloating, a feeling of fullness, and changes in bowel habits. As the tumours grow, they can also cause nausea, vomiting, and weight loss.


Diagnosing PMP can be challenging as it can mimic other conditions, such as ovarian or colon cancer. To diagnose PMP, doctors will perform a physical exam and order imaging tests, such as CT or MRI scans, to look for the presence of tumours in the abdomen. A biopsy of the tumours is typically required to confirm the diagnosis.


The treatment of PMP depends on the extent of the disease and whether it has spread to other organs in the abdomen. In many cases, surgery is the primary treatment for PMP. The goal of surgery is to remove as much of the tumours as possible while preserving as much healthy tissue as possible. In some cases, chemotherapy or radiation therapy may be used in conjunction with surgery to help destroy any remaining cancer cells.

Survival Rate

The survival rate for PMP depends on a variety of factors, including the stage of cancer, the extent of the tumours, and the age and overall health of the patient. In general, the five-year survival rate for PMP is between 50% and 60%. However, for patients with more advanced diseases, the survival rate is lower.

Pseudomyxoma Peritonei is a rare form of cancer that affects the lining of the abdominal cavity. It can be difficult to diagnose due to its vague symptoms, and treatment options depend on the extent of the disease. While the survival rate for PMP is generally good, it can vary depending on individual factors. If you are experiencing symptoms of PMP, it is important to speak with your doctor as soon as possible to ensure a timely diagnosis and treatment plan.

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