Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . There is improved aeration of the right lower lobe with persistent partial collapse . Possible small left pleural effusion is seen . No pneumothorax is detected . Heart size is top normal . Mediastinal contours are stable . Endotracheal tube tip projects approximately 3 cm above the carina . Enteric catheter courses below the diaphragm with tip projecting over the medial right upper quadrant .
    OUTPUT:
    
Improved aeration of the right lower lobe , which is now only partially collapsed .