Due Happens Inside the Body

The cancerous cells clump together in a malignant tumor. As it grows, the tumor pushes against and into other organs and healthy tissue, causing symptoms. Because the mesothelium is a flat thin lining, the mesothelioma tumor often takes a diffuse shape.

In its advanced stage the cancer metastasizes through the lymph system and spreads to other parts of the body. It is still referred to as mesothelioma because it started in the mesothelium.