Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with chest radiograph from ___ , poor aeration of the left lung base continues . Mild right lower lobe atelectasis is unchanged . Tracheostomy tube and right IJ line unchanged in standard placements . There is no focal consolidation , effusion or pneumothorax . There is no vascular engorgement or pulmonary edema . Moderate cardiomegaly continues to improve since ___ .
    OUTPUT:
    
1 . No evidence of cardiac decompensation . No evidence of aspiration or pneumonia . 2 . Persistent moderate left lower lobe atelectasis and mild right lower lobe atelectasis . 3 . Moderate cardiomegaly has been improving since ___ .