Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes and elevation of the left hemidiaphragm is largely stable from the prior study . There is a slight prominence of the vasculature but no focal consolidations worrisome for pneumonia . Opacities at the left lung base could be due to overlying soft tissue versus a small effusion . The right lung appears clear . Cardiac size is top normal . There is no pneumothorax .
    OUTPUT:
    
Low lung volumes and elevated left hemidiaphragm . Possible very small left pleural effusion versus soft tissue attenuation at the left base . No evidence of pneumonia .