What is Mesothelioma Cancer

Malignant mesothelioma (me-zoe-thee-lee-OH-muh) is a rare cancer that occurs in the thin layer of tissue that covers the majority of your internal organs (mesothelium).

Doctors divide mesothelioma into different types based on what part of the mesothelium is affected. Mesothelioma most often affects the tissue that surrounds the lungs (pleura). This type is called pleural malignant mesothelioma. Other, rarer types of mesothelioma affect tissue in the abdomen, around the heart and around the testicles.

Mesothelioma is an aggressive and deadly form of cancer. Mesothelioma treatments are available, but for many people with mesothelioma, a cure is not possible. Instead, treatment for mesothelioma is often focused on keeping you as comfortable as possible.