<prompt> A term newborn presents with frothing, excessive drooling of saliva, coughing of saliva. There was history of polyhydramnios in antenatal period. There is difficulty in passing a nasogastric tube. What is the probable diagnosis?Diaphragmatic herniaChoanal atresiaGastroschisisTracheo-esophageal fistula  <response>: Tracheo-esophageal fistula :Newborn presents with frothing, excessive salivation.Associated with polyhydramnios in antenatal period.Nasogastric tube is inserted and inability to pass it confirms the diagnosis of TEF. 