Killian's dehiscence (Killian's Triangle)

Collection of Medicine MCQs (Cardiovascular system) for medical students. Concept based MCQs with detailed explanations which help students to gain valuable insights and gain an edge in competitive examinations. More than just answering MCQs, the explanations will improve the knowledge and understanding about the conditions discussed. Also useful for MD students who are preparing for Superspeciality entrance examinations. Medicine MCQs - Cardiovascular System Kindle Edition: Click Here for a Preview. Comments and suggestions are most welcome.
  • Killian’s dehiscence is a potential triangular gap between the oblique fibers of thyropharyngeus and the transverse fibers of cricopharyngeus (Thyropharyngeus and cricopharyngeus are 2 parts of the inferior constrictor of pharynx)
  • It is named after German ENT surgeon – Gustav Killian
  • It is through this gap that the herniation of pharyngeal mucosa occurs in case of pharyngeal pouch (Zenker’s diverticulum)
  • It is also called ‘gateway of tears‘ as it is a common site for perforation during oesophagoscopy


  • Laimer triangle
  • Laimer-Haeckermann area
  • Laimer-Killian triangle

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