Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A right - sided chest tube remains in unchanged position . There has been interval increase in extent of opacification of the right hemithorax , compatible with increasing size of a large layering right pleural effusion . Additionally , right basilar atelectasis is noted . Minimal patchy opacity in the left lung base may also reflect atelectasis . The heart size remains moderate to severely enlarged . Mediastinal contours are relatively unchanged . Mild element of pulmonary vascular congestion is likely present . No pneumothorax is identified . No acute osseous abnormalities are seen .
    OUTPUT:
    
Increased size of large layering right pleural effusion with right basilar atelectasis . Probable mild pulmonary vascular congestion and left basilar mild atelectasis . Right - sided chest tube remains in unchanged position .