Tracheomalacia. Trachea Chondromalacia . Trachea Chondromalacias . Tracheomalacias . Chondromalacia of Trachea . A congenital or acquired condition of underdeveloped or degeneration of CARTILAGE in the TRACHEA. This results in a floppy tracheal wall making patency difficult to maintain. It is characterized by wheezing and difficult breathing. . 0.53