8. Abdominal pain
In the case of peritoneal mesothelioma, which occurs in the abdomen, you are likely to experience abdominal pain. This is caused by inflammation of the tissues there.
The peritoneum serves as a protective membrane covering the abdomen in two layers. The parietal layer surrounds the abdominal cavity, and the visceral layer folds around the stomach, liver, and other abdominal organs.
Mesothelioma can develop in either or both layers.