Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest radiograph is obtained . Evaluation is limited given low lung volumes . Overlying EKG leads are also present which slightly limit the evaluation . There are ground - glass poorly defined opacities involving the lower lungs bilaterally , slightly more prominent on the left than right . This appearance may be related to pneumonia or possibly aspiration . No large pleural effusion or pneumothorax is seen . The heart size appears top normal . Aorta is unfolded with atherosclerotic calcifications . Midline sternotomy wires and mediastinal clips are noted . The imaged osseous structures appear intact .
    OUTPUT:
    
Bilateral mid to lower lung opacities left greater than right , could reflect pneumonia or aspiration .