<prompt> EXIT procedure is used in all, EXCEPT:Cystic hygromaTeratomaCongenital tracheal stenosisHyperophic pyloric stenosis  <response>: The ex utero intrapaum therapy EXIT procedure is used in circumstances in which airway obstruction is predicted at the time of delivery due to the presence of a large neck mass, such as a cystic hygroma or teratoma, or to congenital tracheal stenosis. Ref: Schwazs principle of surgery 9th edition, chapter 39. 