This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Anatomy
Common sites for Cushing ulcers include all of the following except 
Select and explain. 
A. Esophagus, B. Stomach, C. Ist pa of duodenum, D. Distal duodenum
D: Distal duodenum
Answer: D: Distal duodenum 
Explanation: Cushing's ulcers are Stress ulcers that are associated with intracranial injury or an increase in intracranial pressure. About the site of involvement in Cushing's ulcer the maximum information I could get was from Robin's. It states "Gastric, duodenal and esophageal ulcers arising in patients with intracranial injury, operation or tumors are designated Cushing ulcer" So the best option to rule out is distal duodenum, as almost all duodenal ulcers are located in the proximal pa. Also know Cushing's ulcers are more prone to perforate than other stress ulcers. Ref : Robbins Basis 8/e p775