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': "Which of the following is a precancerous condition of cancer stomach? \nSelect and explain. \nA. Peptic ulcer, B. Chronic gastric atrophy, C. Achalasia cardia, D. Curling's Ulcer", 'role': 'user'}, {'content': "Answer: B \nExplanation: Premalignant Conditions of gastric carcinoma Atrophic gastritis: Both type A (autoimmune pernicious anemia) and type B (associated with H. Pylori) atrophic gastritis are associated with increase risk for gastric cancer. Gastric Polyp: Gastric polyp are of 5 type - inflammatory, hamaomatous, heterotopic, hyperplastic and adenomatous. Of these two namely hyperplastic and adenomatous are associated with increased risk for gastric carcinoma. Adenomatous polyp is having a risk of approximately 38% of malignant transformation and hyperplastic polyp have only Intestinal metaplasia and dysplasia: Both are precursor lesion of gastric cancer. Familial adenomatous polyposis coli: patients with familial adenomatous polyposis have a high prevalence of gastric adenomatous polyp (50%) and 10 times more likely to develop adenocarcinoma stomach. Ref: Schwaz 9/e, Page 927; Maingot's 10/e, Page 1006.", 'role': 'assistant'}]