This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Oesophagus, Subject name: Surgery
Dohlman's operation done for: 
Select and explain. 
A. Achalasia, B. Rectal prolapse, C. Ca esophagus, D. Zenker's diverticulum
D: Zenker's diverticulum
Answer: D: Zenker's diverticulum 
Explanation: Ans. (d) Zenker's diverticulumRef Shackelford 7th Edition, Page 345* Surgical Management of Choice is - Cricopharyngeal Myotomy with Diverticulectomy (If given in choices is the best option)* Dohlman's operation - Endoscopic stapling technique preferred for Diverticulum more than 3cm Size.