<prompt> Diverticulum through the Killians dehiscence is called:Pharyngeal pouchPalatine pouchOesophageal pouchNone  <response>: Ans: a Pharyngeal pouch Ref: Dhingra, 3rd ed, p. 330 4th ed, p. 223Zenkers diverticulumIt is a pulsion diverticulum between 2 parts of inferior constrictorPathology: Arises bw 2 parts of inferior constrictor due to neuromuscular incordination. The propulsive thyropharyngeal part is supplied by pharyngeal plexus. The sphincteric cricopharyngeus is supplied by recurrent laryngeal nerve.Usually starts in midline posteriorly, then comes to lie in the leftSymptoms are dysphagia, regurgitation, cough, aspiration pneumoniaDiagnosis is by barium swallowTreatment:Excision of pouch cricopharyngeal myotomyDohlmanns procedure - in debilitated patients 