A most common cause of esophageal perforation at the site of cricopharynx -
Oesophageal perforation is of two types : Iatrogenic (MC) A common site is cervical esophagus Just above the upper sphincter. Spontaneous rupture As seen in Boerhaave's syndrome (Rupture of esophagus are vomiting). Common in the lower 1/3 of esophagus. ref - Internet
Spontoneous
Iatrogenic
Traumatic
None
G.I.T