Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours are probably within normal limits . Within the limitations of AP portable technique including with low lung volumes , the right lung is probably clear . However , opacity projecting over the mid to upper lung is concerning for pneumonia . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Findings suggest pneumonia in the left lung .