Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . Increased soft tissue density slightly limits the lateral view ; however , there may be a left lower lobe opacity . There is no pleural effusion or pneumothorax . The right lung is clear . The cardiac , mediastinal , and hilar contours are normal . There is no pulmonary vascular congestion .
    OUTPUT:
    
Posterior left lower lobe subtle opacity may represent pneumonia . Increased soft tissue slightly limits examination . These findings were discussed with Dr . ___ at 11 :30 a .m . on ___ by telephone .