Which of the following would be least likely to cause an ulcer in distal esophagus?: (A) HSV, (B) Achalasia cardia, (C) Severe reflux esophagilis, (D) Zenkers diverticulum
Answer is D. Zenkers diverticulum occurs at the junction of thyro and cricopharyngeus i.e above the esophagus it doesn't cause ulcer in distal esophagus.