<prompt> Heart failure cells are seen in?Pulmonary infarctionPulmonary edemaPneumoniaPulmonary embolism  <response>: Ans. is b i.e., Pulmonary edema Heart failure cells are Hemosiderin laden alveolar macrophages. Heart failure cells are a manifestation of pulmonary congestion and edema as seen in heart failure. Pulmonary edema pulmonary infarction can be differentiated by the presence of heart failure cells in pulmonary edema. 