This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gastrointestinal Radiology, Subject name: Radiology
Large discrete ulcers in esophagus are seen in 
Select and explain. 
A. Achalasia cardia, B. Plummer Vinson syndrome, C. Esophageal carcinoma, D. CMV esophagitis
D: CMV esophagitis
Answer: D: CMV esophagitis 
Explanation: Oesophagitis including HIV and CMV oesophagitis usually manifest as one or more large ovoid or diamond-shaped ulcers.