Mesothelioma, or malignant mesothelioma, is a rare kind of cancer. It starts in the mesothelium, a thin lining that protects the outer surface of some organs, including the lungs, stomach/abdominal space and chest wall. The mesothelium also makes fluid that helps the organs move against each other during certain processes, such as breathing. The mesothelium has different names for different body parts:

  • The lining in the chest is the pleura.
  • The lining in the abdomen is the peritoneum.

Mesothelioma can start in any of these linings. It’s most common in the chest, where it’s called pleural mesothelioma. The second most common site is the abdomen, where it’s called peritoneal mesothelioma.

Find information at Providence Thoracic Surgery and Providence Thoracic Oncology Program.

At Providence Cancer Center, patients and families benefit from some of the finest, most comprehensive cancer services in the world, including the best in diagnostic imaging, state-of-the-art treatments, nationally-renowned research, and compassionate counseling and support. Our doctors, surgeons, nurses, researchers, patient advocates and other caregivers work together to treat cancer aggressively and to ensure that no person has to face the challenge of a cancer diagnosis alone.