<prompt> Positive acid Schiff macrophages seen in?Whipple diseaseCrohns diseaseAbetalipoproteinemiaUlcerative colitis  <response>: 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.Diarrheasteatorrhea occurs later in disease course.Most common in older men. 