 For the bronchoscopy, you will be given drugs to relax, and then a local anesthetic will be sprayed into your nose and throat to numb those areas. A slim, flexible tube with a light will be placed through your nose or mouth and into your lungs. A small brush will be fed through the tube and into your lungs. The brush will gently scrape off a sample of lung tissue. Tweezers will then be fed through the tube to collect the tissue samples biopsy. A small amount of water will be sprayed into your lungs and then suctioned out through the tube to collect tissue samples and mucous samples. 