<prompt> The most common type of trachea - esophageal anomlay isEsophageal atresia with fistula to the distal esophagusEsophageal atresia without fistulaEsophageal atresia with fistula to the proximal esophagusH-type fistula without esophageal atresia  <response>: Five types of tracheo-oesophageal fistula are recognised. in the most common variety80the 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 esophagusH 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 