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: Pathology
What are Heart failure cells 
Select and explain. 
A. Lipofuscin containing cardiac myocytes, B. Pigmented alveolar macrophages, C. Swollen cells in liver, D. Pale cells in pancreatic acini.
B: Pigmented alveolar macrophages
Answer: B: Pigmented alveolar macrophages 
Explanation: Hemasiderin containing macrophages in the alveoli are indicators of pulmonary edema is cases of left heart failure. Hence, they are called Heart failure cells.