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: Pathology
[{'content': "Positive acid Schiff macrophages seen in? \nSelect and explain. \nA. Whipple disease, B. Crohn's disease, C. Abetalipoproteinemia, D. Ulcerative colitis", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. a. Whipple diseaseRef: Robbins and Cotran Pathologic Basis of Disease 9th Ed; Page No- 791Whipple DiseaseInfection with Tropheryma whipplei (intracellular gram [?]); PAS [?]Foamy macrophages in intestinal lamina propria.Cardiac symptoms, Arthralgias, and Neurologic symptoms are common.Diarrhea/steatorrhea occurs later in disease course.Most common in older men.', 'role': 'assistant'}]