The most common type of trachea - esophageal anomlay is

Five types of tracheo-oesophageal fistula are recognised. in the most common variety{80%}the upper pa of the esophagus ends blindly and the lower pa is connected to trachea by a fistula in second type there is no fistulous connection between either the upper or the lower pa of esophagus and the trachea no esophageal atresia,but there is a fistulous connection between trachea and esophagus{H type} Upper segment of esophagus opens into trachea is uncommon in the least common variety both segments open into trachea. Ref : ESSENTIAL PEDIATRICS,O.P.GHAI,PG NO:151,7th edition