Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right dual lumen central venous catheters seen with distal tip likely in the right atrium . There are small to moderate bilateral effusions . Retrocardiac opacity silhouetting the hemidiaphragm may be due to effusion although superimposed consolidation is also possible . Indistinct pulmonary vascular markings seen more superiorly in the lungs . There is at least moderate cardiac enlargement although not well assessed . Hiatal hernia is suspected . On the lateral view there is dense opacity projecting over the cardiac silhouette of extreme high density not seen on the frontal and is likely extra thoracic in location . No acute osseous abnormalities identified .
    OUTPUT:
    
Bilateral pleural effusions and vascular congestion . Retrocardiac opacity may be due to atelectasis although infection is possible . Dense opacity seen on the lateral view not confirmed on the frontal view and is likely extra thoracic although nonurgent repeat exam to confirm extrathoracic location is suggested . Probable hiatal hernia .