Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is moderately enlarged . The lung volumes are low . The cardiac , mediastinal and hilar contours appear stable . New opacification of the left lung base is concerning for pneumonia and are probably a small coinciding left pleural effusion . There is no evidence for pulmonary edema .
    OUTPUT:
    
New left basilar opacification concerning for pneumonia and probably a pleural effusion .