An erosion of the mucosal layer of the stomach or duodenum describes a
1. diverticulum.
2. Crohn's lesion.
3. hiatal hernia.
4. Peptic ulcer.
Correct Answer: 4
Rationale 1: Diverticulum occurs in the large intestine.
Rationale 2: Crohn's lesion can occur anyway in the gastrointestinal tract.
Rationale 3: Hiatal hernias are an outpouching in the esophagus.
Rationale 4: A peptic ulcer is erosion of the mucosal layer of the stomach or duodenum.
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