Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . Low lung volumes crowd the pulmonary vasculature and severely limit the examination . Sternotomy wires and mediastinal clips from prior CABG in appropriate position . No pleural effusion or pneumothorax . Low lung volumes accentuate the cardiac size .
    OUTPUT:
    
Low lung volumes severely limit this examination . Increased opacities at the bases could be crowding of pulmonary vasculature , atelectasis or pneumonia . Suggest repeat films with better inspiration .