Diagnosis For Mesothelioma Cancer:-

At The Hospital:-

If you see a specialist, you will be asked about your medical history and symptoms. The specialist will then examine you by feeling the area that is painful or swollen. You may be asked to have blood tests to check your general health. Then your tests will be arranged in the out patients department.
If your doctor suspects you may have mesothelioma, you may have quite a few tests. This is because it can be difficult to diagnose. Many of the usual tests used to diagnose lung disease prove negative when used to diagnose mesothelioma. You may have

X-rays
CT scan
Thoracoscopy (and biopsy of the pleura)
Fluid drainage (thoracocentesis or abdoparacentesis)
Of these tests, X-ray, CT scan and thoracoscopy are the most important for diagnosing mesothelioma. But of course, at this stage, your specialist doesn't know what's wrong. So, as mesothelioma can be difficult to diagnose you may have a range of tests.

X-Ray :-

You will almost certainly be asked to have a chest X-ray or abdominal X-ray. A chest X-ray can show up fluid collecting around the lung. An abdominal X-ray may show up a swelling or fluid in the abdomen (tummy).

CT Scan :-

This is a computerised scan using X-rays. You may be asked to have a CT scan of your chest or abdomen. A CT scan can show abnormal swellings in body organs or lymph nodes. You may be given an injection of dye called ‘contrast’ before the scan. This helps to make the scan clearer to read. There is more about having a CT scan in the CancerHelp UK section about cancer tests.

Thorascopy :-

This is a small operation usually carried out by a specialist surgeon. It is done under a general anaesthetic. A small cut (incision) is made in your chest wall and a thoracoscope (a telescope like instrument with a video camera attached) is inserted through the hole. Using forceps the doctor can take a small sample (biopsy) of the pleura, the tissues which cover the lungs. This is then sent to a laboratory for testing to see if there are any cancer cells. This is sometimes the only certain way of finding out what's wrong because mesothelioma can be so difficult to diagnose. Other tests may not always show mesothelioma or may not be able to show whether the problem is mesothelioma or a different type of lung problem.

Fluid Drainage :-

Many people with pleual mesothelioma have fluid around their lungs (a pleural effusion). People with peritoneal mesothelioma may have fluid in their abdominal cavity (peritoneal effusion).