<prompt> Dohlman surgery in Zenkers diveiculum is:-Endoscopic stapling of septumEndoscopic suturing of pouchEndoscopic electrocautery techniqueLaser division of pouch  <response>: Killians Dehiscence Pharyngeal Pouch - A pharyngeal pouch is a herniation of pharyngealmucosa through a defect usually posterior in the pharyngealwall. The terms Zenkers diveiculum and hypopharyngealdiveiculum are also used.The most frequent location of the herniation is theposterior wall of the pharynx through an area of naturalweakness between the two pas of the inferior constrictormuscle i.e. Thyropharyngeus and Cricopharyngeus. Diagnosis: Barium swallow Treatment:1. Dohlmans operation -The paition wall between the esophagus and pouch is divided by diathermy through endoscope. Done in poor risk debilitated patients. 2. Endoscopic laser treatment 3. Excision of pouch and cricopharyngeal myotomy 4. Endoscopic stapling technique 