Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with ___ , bilateral pleural effusions with borderline pulmonary edema are again seen and opacity in the right lower lobe may represent atelectasis , aspiration , or pneumonia . The cardiac size is enlarged and mediastinal silhouette is unremarkable . Again seen are the left subclavian pacemaker with dual chamber and epicardial leads , median sternotomy wires , mediastinal clips , and prosthetic mitral valve .
    OUTPUT:
    
RLL opacity may represent atelectasis , aspiration , or pneumonia . Bilateral pleural effusions with pulmonary edema . No significant changes compared to ___ .