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How is lung cancer diagnosed?

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Diagnosis of lung cancer may be made by physical examination, chest X rays, bronchoscopy (see bronchoscope ), or percutaneous needle biopsy (insertion of a fine needle through the skin and into the lung to obtain tissue for study). In many cases definitive diagnosis is made after surgical specimens have been evaluated. Evaluation of suspected sites of metastasis may involve CAT scans or magnetic resonance imaging (MRI). A special CAT-scanning technique (helical low-dose CAT-scanning) has also been used for initial diagnosis because it can detect small tumors before they have spread.

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Get more facts and information about lung cancer . Or, view the full encyclopedia entry from The Columbia Encyclopedia, Sixth Edition.

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