Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest radiograph is obtained . Midline sternotomy wires and mediastinal clips are again seen . Diffuse airspace opacity is seen within the lungs , marginally worse compared with prior . Findings are concerning for fluid pneumonia or possibly pulmonary edema . Overall , cardiomediastinal silhouette appears unchanged . Bony structures appear grossly intact with old deformity of the right mid clavicle again noted .
    OUTPUT:
    
Slight worsening in diffuse pulmonary airspace opacity concerning for infection and / or edema . Close followup advised .