Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded . There is an ill - defined opacity in the right lower lung region with apparent obscuration of the right heart margin , suggesting right middle lobe consolidation . There is also consolidation along the right cardiophrenic angle . Otherwise , there are increased interstitial opacities and Kerley B lines , most prominent in both lower lung regions . Bilateral hilar engorgement is also apparent . There is no pleural effusion or pneumothorax . Cardiac sihouette is within normal limits . The sternotomy wires are intact . A prosthetic aortic valve is present .
    OUTPUT:
    
Findings compatible with interstitial pulmonary edema , which appears slightly improved compared with radiograph performed five hours prior . Consolidation in the right middle lobe might represent asymmetric edema vs pneumonia .