Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Semi-upright AP and lateral radiographs of the chest are provided . The heart is enlarged . There is a left layering pleural effusion . Kerley B lines and pulmonary vascular redistribution is present . There is no pneumothorax . There is no large airspace consolidation .
    OUTPUT:
    
Moderate left pleural effusion and pulmonary edema consistent with congestive heart failure . Underlying pneumonia in LLL can not be excluded .