This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'Hea failure cells are seen in \nSelect and explain. \nA. Chronic venous congestion of liver, B. Chronic venous congestion of lung, C. Acute venous congestion of lung, D. Acute venous congestion of liver', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ref Robbins 8/e p535, 7/e p122,9/e p116 Cut surfaces of hyperemic or congested tissues feel wet and typically ooze blood. On microscopic examination, acute pulmonary congestion is marked by blood-engorged alveolar capillaries and variable degrees of alveolar septal edema and intra-alveolar hemorrhage. In chronic pulmo- nary congestion, the septa become thickened and fibrotic, and the alveolar spaces contain numerous macrophages laden with hemosiderin ("hea failure cells") derived from phagocytosed red cells', 'role': 'assistant'}]