Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: An endotracheal tube terminates about 4 cm above the carina . The heart is probably normal in size . Projecting over the medial right lung apex is a large partly obscured round opacity measuring about 5 cm in diameter . There are several possible etiologies including a mass lesion , aneurysm , or perhaps less likely , a loculated fluid collection . There are streaky opacities at the left lung base and a right mid lung opacity ; atelectasis or pneumonia could be considered for these . The right hemidiaphragm is elevated , which may reflect a variety of etiologies including potentially a subpulmonic effusion , noting minimal blunting of the right costophrenic sulcus . There is no pneumothorax .
    OUTPUT:
    
1 . Status post endotracheal intubation . 2 . Patchy opacities at both lung bases . Correlation with clinical presentation is recommended . Atelectasis or pneumonia could be considered for these . 3 . Round opacity in the right upper hemithorax with a mass - like appearance . If the etiology for this lesion is not already known and understood , then chest CT , preferably with intravenous contrast if possible , is suggested , in addition to correlation with any prior available imaging .