Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low , similar to prior exam . Increased interstitial markings are seen throughout the lungs , left greater than right , which may represent asymmetric pulmonary edema . There is no pleural effusion or pneumothorax . The cardiomediastinal silhouette is unremarkable . Median sternotomy wires and mediastinal clips are noted .
    OUTPUT:
    
Increased interstitial pulmonary markings , left greater than right , which may represent asymmetric pulmonary edema . If this does not resolve with treatment for pulmonary edema , this appearance could also reflect an atypical pneumonia or less likely lypmhangitic carcinomatosis .