Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the prior study , lung volumes are lower , in the tip of the right HD line appears that been advanced slightly , given differences in patient rotation . A new faint , hazy opacity in the left lower lung abutting the left heart border is concerning for a developing pneumonia . No larger pleural effusions . No pneumothorax . Cardiac and mediastinal silhouettes otherwise stable .
    OUTPUT:
    
New , faint , hazy opacity in the left lower lung abutting the left heart border is concerning for a developing pneumonia . Please refer to subsequent CT torso for further details .