The earlier mesothelioma is detected, the better your chances are for an effective treatment. To determine whether a person has mesothelioma, doctors may use one or more of these diagnostic methods:

• Chest X ray 

• CAT scan - CT or Computerized Tomography 

• MRI - Magnetic Resonance Imaging 

• PET scan - Positron Emission Tomography

• PFT - Pulmonary Function Test 

• Transbronchial biopsy - A flexible, lighted scope is passed down the trachea to the bronchi area of the lungs. 

• Thoracotomy - During surgery, the chest is opened and examined, usually between two of the lower ribs on one side.

• Thoracoscopy - A thoracoscope with a video camera is sent through an incision between the ribs.

• Centesis - Pleural, peritoneal, or pericardial fluid is drained and evaluated. This technique is used both for diagnosis and to relieve pressure, pain, and fullness in the chest or abdominal areas.