“…Tracheal agenesis appears to have been described first by Payne [ 19001; subsequently 41 other patients were reported [Walcher, 1928;Fritz, 1933;Benesova and Peter, 1934;Marek, 1940;Morison, 1949;Milles and Dorsey, 1950;Kessel and Smith, 1953;Sandison, 1955;Hempel, 1956;Devenis and Otis, 1957;Onarir and Sariyalcin, 1961;Floyd et al, 1962;Witzleben, 1963;Fonkalsrud et al, 1963;McCracken et al, 1964;Devi and More, 1966;Stowens, 1966;Colavecchio, 1968;Lyons and Bruce, 1968;Eimer, 1969;Joshi, 1969;McNie and Pryse-Davies, 1970;Altman et al, 1972;Hopkinson, 1972;Hong et al, 1973;Effman et al, 1975;Chaurasia, 1976;Warfel, 1976;Donovan and Friedman, 1979;Far0 et al, 1979;Buchino et al, 1982; DFC:23 24 Evans, Reggin, and Greenberg Haupt and Edwards, 19831. In these cases tracheal agenesis was partial or total and various classifications of this malformation have been described [Floyd et al, 1962;Faro et al, 1979;Kluth, 19761.…”