Review
Copyright ©2011 Baishideng Publishing Group Co.
World J Radiol. Dec 28, 2011; 3(12): 289-297
Published online Dec 28, 2011. doi: 10.4329/wjr.v3.i12.289
Table 1 Floyd’s classification of tracheal agenesis
Tracheal agenesis typeFeatures
Type IAgenesis of proximal trachea with short segment normal distal trachea, carina and bronchi. Fistula is present between the distal trachea and esophagus
Type IIAgenesis of entire trachea. There may be a communication between esophagus and carina, from which the bronchi originate
Type IIIAtresia of entire trachea and carina, the bronchi originate individually from the esophagus