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Lung needle biopsyDefinition A lung needle biopsy is the process of obtaining and examining a sample of lung tissue. How the test is performed
The procedure usually takes 30 to 60 minutes. Laboratory analysis usually takes a few days. How to prepare for the test Before a needle biopsy of the lung is conducted, a chest X-ray, chest CT scan, or bronchoscopy will be performed. Sometimes a mild sedative will precede the biopsy. You must sign a consent form. It is important to remain as still as possible for the biopsy, and to refrain from coughing. How the test will feel A lung needle biopsy is preceded by a local injection of anesthetic, which will sting for a moment. You will feel pressure and a brief, sharp pain when the needle touches the lung. Why the test is performed A needle lung biopsy is performed when there is an abnormal condition that is near the surface of the lung, in the lung itself, or on the chest wall. The test is usually performed to diagnose relatively large abnormalities seen on chest X-ray or CT scan. Most often, the abnormality is not believed to be accessible by other diagnostic techniques, such as bronchoscopy. Normal Values Normal tissues and no microbial growth, if a culture is performed, are normal. What abnormal results mean
What the risks are The risks include a collapsed lung, bleeding, and infection. A needle biopsy should NOT be performed if other tests indicate the presence of:
Special considerations Signs of a collapsed lung include:
If any of these occur, report them to the health care provider immediately. Illustrations
Page Content: Transthoracic needle aspiration; Percutaneous needle aspiration |
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