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 procedure is used for: 
Select and explain. 
A. Rectal prolapse, B. Esophageal achalasia, C. Cancer oesophagus, D. Zenker's diverticulum
D: Zenker's diverticulum
Answer: D: Zenker's diverticulum 
Explanation: Ans. (d) Zenker's diverticulumRef: Sabiton 20th Edition, Page 1019* Dohlman Endoscopic stapling procedure is indicated for diverticulum >3cm size