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Lung Surgery: Your Evaluation and Tests

You are having lung surgery. To evaluate your lungs, tests may be done. You may have had some of these tests. Others may be scheduled before your surgery. Your doctor uses the information gathered during these tests to help plan your surgery and treatment.

Outline of head and chest showing nose, trachea, and lungs. Bronchoscope is inserted in nose into trachea and ending at lung.

Imaging tests

Imaging tests take pictures of your lungs. They can detect problems such as a mass, an infection, or air in the space between the lungs and the chest wall (pleural cavity). But they can’t tell the doctor for certain whether a lung mass is cancer. Imaging tests you may have include:

  • Chest X-rays

  • CT (computed tomography), also called CAT scans

  • MRI (magnetic resonance imaging)

  • PET (positron emission tomography)

  • Other imaging tests as needed

Tests that look at your lungs or take a tissue sample

You may need tests that look at the inside of your lungs and the area around them. Or you may need a test that takes small samples of lung cells or tissue (biopsy). The samples can be looked at later under a microscope. Possible tests include:

  • Bronchoscopy. This is done using a thin lighted tube called a bronchoscope. It is put into your nose or mouth down to the lungs. It is used to look at breathing passages at the entrance to your lungs.

  • Mediastinoscopy. A tube is put through an incision above the breastbone. This tube is used to look at the area between the lungs.

  • Mediastinotomy. The lymph nodes in the chest are looked at through an incision in the chest wall. A biopsy may be done.

  • Needle biopsy. A needle is put through the chest wall or through a bronchoscope. The needle is used to collect tissue or fluid.

Other tests

You may have tests to measure how well your lungs work. They include:

  • Pulmonary function tests. These measure how your lungs work. This includes testing how much air your lungs can hold and how much air is left in your lungs after you exhale. These also measure how fast you can blow air out of your lungs.

  • Pulse oximetry. This measures how much oxygen is passed from your lungs to your blood.

  • Arterial blood samples. These show how much oxygen is in your blood.


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