👉 Retrobronchial refers to a condition where the bronchi, which are part of the respiratory system, have become narrow and narrowed. It is characterized by the presence of small, flat, and irregular sacs or tubes in the bronchioles (tiny air passages) that lead out from the lungs. These sacs can be found throughout the body but are most common in the respiratory tract. This condition can make it difficult for people to breathe, as they struggle with the narrowness of