Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low , accentuating pulmonary vasculature . Despite this limitation , there is mild persistent pulmonary vascular congestion . Retrocardiac opacity is unchanged . An endotracheal tube tip terminates at the clavicular heads . A right internal jugular line is kinked in the subcutaneous tissues but the tip is in the mid SVC . A Dobbhoff tube loops in the stomach . Median sternotomy wires are intact . Mediastinal clips are in expected positions .
    OUTPUT:
    
1 . Unchanged appearance of mild pulmonary vascular congestion . 2 . Unchanged retrocardiac opacity , may represent atelectasis or consolidation depending on the clinical context .