<prompt> Which is most common site for iatrogenic esophageal perforation?Abdominal poionCervical poionAbove arch of aoaBelow arch of aoa  <response>: Esophageal perforation Iatrogenic Spontaneous Most common type Caused by endoscopy MC site is cervical esophagus cricopharyngeal area Esophageal rupture after vomiting MC site: left posterolateral side of the distal esophagus 