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Your airways were examined from the inside.

When we breathe, the air gets into the body via the respiratory tract. The respiratory tract can be divided into the upper and the lower respiratory tracts. The nose and throat form part of the respiratory tract. The lower respiratory tract begins at the larynx in the throat. It includes the windpipe and the bronchia.

The test involved inserting a flexible tube into your airways. This is normally done via the nose or mouth. Images of the airways are sent out via the tube. In this way, the inside of the airways can be studied and assessed for any changes.

The individual areas of the lungs are usually separated from one other by thin walls. There may also be connections through which the air from one part of the lungs is getting into another part. You were examined to see whether you have any connections of this sort.