Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided . Midline sternotomy wires again noted . Spinal hardware again noted . Previously seen right adjacent venous catheter , skin ___ , endotracheal tube and orogastric tubes have been removed . Lung volumes are markedly low . There is consolidation in the left lower lung which was seen on prior exam in may represent effusion , atelectasis versus pneumonia . There is right basal atelectasis also noted . Mild edema and congestion is likely present . No large pneumothorax . Heart size grossly stable .
    OUTPUT:
    
Mild congestion and mild edema with left basal opacity concerning for atelectasis versus pneumonia and possible effusion .