Using two different endoscopes together is better than using one to stage lung cancer, and is also much more precise and less invasive than the surgical method now most commonly used. This new technique, which uses two small flexible tubes, one of which is inserted into a patient's esophagus to access lymph nodes in the back of the lungs while the other is placed into the trachea, or airway, to reach nodes at the front and sides, was 93 percent accurate in finding malignant lymph nodes in a group of 138 patients.
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