Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs again demonstrate a right pleural drain . The mediastinum appears normal and moderate cardiomegaly is unchanged . The lungs are clear without focal opacity or pulmonary edema . The right pleural effusion is unchanged and the left pleural effusion is slightly decreased . There is no pneumothorax .
    OUTPUT:
    
1 . Slightly decreased left pleural effusion . 2 . Clear lungs without focal opacity .