What are the symptoms of mesothelioma?

Mesothelioma often starts as many tiny lumps (nodules) in the pleura, which may not show up on scans or x-rays until they are quite large. The main symptoms of pleural mesothelioma are pain in the chest and breathlessness. Some people also notice that their voice becomes hoarse and they have a cough that does not go away.

Peritoneal mesothelioma often causes swelling and pain in the abdomen.

Both types of mesothelioma can cause other general symptoms, such as loss of appetite, weight loss and tiredness. As many of these symptoms can also be caused by other illnesses, your doctor will need to do a series of tests before a diagnosis can be made.
source - www.cancerBACUP.org.uk