The health care provider -- ear, nose and throat (ENT); oral surgeon; or pulmonologist (a pulmonary "lung" specialist trained to perform a bronchoscopy) -- will spray a topical or local anesthetic in your mouth and throat. Then, a cannula (a metal tube about 6-inches long and curved on one end) is inserted, curved end first, to hold the tongue out of the way.
An anesthetic is injected through the cannula, enabling it to run down the back of the throat. This will cause coughing at first, which will cease as the anesthetic is increased. When the area feels "thick," it is sufficiently numb.
The suspicious tissue is viewed, and a small piece of tissue is removed using a biopsy punch and sent to the laboratory for examination by the pathologist.
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