Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable upright AP chest radiograph was obtained . The lungs are well expanded with new retrocardiac consolidation and accompanying bilateral small pleural effusions . Pulmonary edema if present is only seen at the bases . There is no pneumothorax . Cardiac and mediastinal contours are unchanged .
    OUTPUT:
    
New left lower lobe consolidation could conceivably reflect pneumonia in the appropriate setting or could be atelectasis . Accompanying small bilateral pleural effusions and mild if any pulmonary edema at the bases .