ANATOMY OF THE TRACHEOBRONCHIAL TREE FROM THE BRONCHOSCOPIC STANDPOINT: STUDY OF TWENTY PAIRS OF LUNGS; PREPARATION OF LUNGS FOR DEMONSTRATION

An examination of textbooks and of the literature shows that a number of valuable studies have been made on the anatomy of the lung. They include the usual dissections and special casts of the lung, such as those reported so beautifully by de Pablo 1 in 1940. Hovever, when the bronchi are considered more strictly from the bronchoscopic point of view, there is much less to be found. Several years ago Huizinga and Behr 2 reported an investigation of 125 pairs of lungs from this point of view. They described the usual bronchial tree and gave their paper the title "Systematic Bronchoscopy." While studies of the anatomy of the lung from the various points of view are necessary and most valuable to the endoscopist, nevertheless none but those doing such work view the bronchi in the endoscopic manner. In recent years endoscopy has become more and more useful to the internist, the