Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are low lung volumes . There is persistent elevation of the right hemidiaphragm and overlying right base atelectasis . Lingular atelectasis is also seen . There is blunting of the posterior left costophrenic angle suggesting a small pleural effusion . There is mild diffuse increase in interstitial markings suggesting mild interstitial pulmonary edema . The cardiac and mediastinal silhouettes are stable .
    OUTPUT:
    
Mild interstitial pulmonary edema and small left pleural effusion .