Peritoneal Mesothelioma

Mesothelioma is a rare, aggressive cancer caused by asbestos exposure. Of the 2,000 to 3,000 cases of mesothelioma diagnosed in the United States annually, 10 to 20 percent of the patients are diagnosed with peritoneal mesothelioma. Peritoneal mesothelioma develops in the abdomen, in the mesothelial cells that form a membranous layer called the peritoneum.

Mesothelioma of the Peritoneum

Once asbestos is inhaled it can affect many of the body's different organs including the throat, lungs, stomach, heart and testicles.

The peritoneum is a membranous layer that is made up of two 'sub-layers' called the parietal and visceral layers. The parietal layer covers the abdominal cavity, while the visceral layer surrounds abdominal organs. Together these two layers provide support and protection for abdominal organs and the abdominal cavity as a whole.
Mesothelioma of the abdomen, like all types of mesothelioma, is caused by asbestos exposure. Though it can take many years for a patient to demonstrate symptoms of peritoneal mesothelioma, the cancer develops when the asbestos fibers become lodged in the spaces between the mesothelial cells.