<prompt> Dohlmans procedure is used for -Zenkers diverticulumCarcinoma esophagusCarcinoma larynxNasal carcinoma  <response>: Ans. is a i.e., Zenkers diverticulum Treatment of zenkers diverticulum Treatment is excision of pouch and cricopharyngealmyotomy. This is done through cervical approach. Dohlmansprocedure: - The partition wall bewteen the oesophagus and the pouch is divided by diathermy through an endoscope. This is done in poor risk debilitated patients. Endoscopic laser treatmentIt is similar to Dohlmans procedure. Partition between the pouch and oesophagus is divided by CO2 laser using operating microscope. 