Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were reviewed . Median sternotomy wires and CABG clips are again noted . The heart size is top normal . The mediastinal and hilar contours are stable . There is no pneumothorax . There are small bilateral pleural effusions . The lungs are hyperinflated with an enlarged retrosternal air space , consistent with COPD . A new streaky opacity at the right base is new and may represent pneumonia . Peribronchial opacities are also noted . Mild prominence of the pulmonary vasculature may indicate mild edema , which is improved since the prior study .
    OUTPUT:
    
Possible right lower pneumonia or recent aspiration . Small bilateral pleural effusions .