This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Misc., Subject name: Pathology
Heart failure cells are present in 
Select and explain. 
A. Alveoli, B. Myocyte, C. Heaptocyte, D. Astrocyte
A: Alveoli
Answer: A: Alveoli 
Explanation: (A) Alveoli# HEART FAILURE CELLS are siderophages (hemosiderin-containing macrophages) generated in the alveoli of patients with left heart failure or chronic pulmonary edema, when the high pulmonary blood pressure causes red cells to pass through vascular wall.> Siderophages are not specific of heart failure. They are present wherever red blood cells encounter macrophages.