This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
[{'content': 'Hour glass stomach is seen in - \nSelect and explain. \nA. Gastric carcinoma, B. Gastric ulcer, C. Gastric Lymphoma, D. Corrossive Strictures', 'role': 'user'}, {'content': 'Answer: B \nExplanation: • Hour-glass stomach is caused by cicatricial contraction of a saddle shaped ulcer at the lesser curvature\n• Tea-pot stomach is caused by longitudinal shortening of gastric ulcer at the lesser curvature of stomach (stomach looks like tea-pot)', 'role': 'assistant'}]