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Lung Cancer Scans and Tests

As with other cancers, lung cancer is signaled by rapid cell growth at uncontrolled levels in the lungs of the patient. Lung cancer symptoms are seldom detected at the early stages unless revealed by a scan or x-ray. Respiratory discomfort or stress in breathing may be the first symptoms. Frequently these are relatively mild indicators and may be ignored unless some other condition, such as a severe cold or virus, is contracted.

Lung cancer spreads to nearby tissues or lymph nodes and advances through the three lobes of the lungs. In advanced cases the cancer may spread to other organs such as the brain, liver and bones.

Lung cancer is among the highest causes of cancer deaths in both men and women. Causes have been studied and documented extensively with the majority traceable to use of tobacco. The tobacco smoke, containing substances called carcinogens, attacks the tissue of the lungs. Research has shown that over 80% of lung cancer cases may be caused by this addictive behavior. Other harmful chemicals and natural substances such as asbestos and radon greatly increase the cancer rate when combined with smoking.

Testing and examination for lung cancer involves an initial medical history that includes the degree of exposure to carcinogens in tobacco as well as in home and work environments. Any family history of respiratory illness is also a concern. Various tests are then employed to detect the presence of cancer cells. Chest x-rays, CT scans and lung biopsy are among the testing methods.

If lung cancer has been diagnosed it is then important to identify the particular stage of the disease. Treatment is totally based on the degree of advancement and if the lung cancer has metastasized then the involvement of other organs of the body must be determined. The tests used in tracing the spread of cancer are PET scans, Bone scans and MRI scans among others. Spiral CT scans are also employed in establishing the stages of lung cancer.

Early detection of lung cancer is paramount in treatment and a full array of scans will be most important to establishment of a treatment plan. If there is concern that the cancer has metastasized then a bone scan, an MRI scan of the chest or spine may be indicated.