Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest views were obtained with patient in upright position . Marked elevation of the right - sided hemidiaphragm is noted , coinciding with blunting of the lateral and posterior pleural sinus indicative of pleural effusion . The cardiac contours are correspondingly obliterated on the right side and heart size can not be assessed with certainty . However , the left - sided cardiac contours and that of the thoracic aorta are rather unremarkable . The pulmonary vasculature in the left hemithorax and the accessible areas on the right side do not show pulmonary vascular congestion . Also , the left lateral and posterior pleural sinuses are free from any fluid accumulation . An NG tube can be identified to pass far below the diaphragm and appears unchanged in comparison with the next preceding portable chest examination of ___ . Comparison of the latest portable examination with the present examination demonstrates that there exists free fluid in the right pleural space as the thickness of the pleural density changes with patient position . The corresponding diffuse densities on the right lung base , most likely represent atelectasis .
    OUTPUT:
    
Unilateral right - sided pleural effusion in patient with ascites . No conclusive evidence for cardiac enlargement or pulmonary vascular congestion , but right - sided basal atelectasis is present in this patient with clinical history of cirrhosis of the liver .