Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single portable frontal chest radiograph was obtained . A known right upper lobe mass widens the mediastinum . In addition , a right upper lobe ground - glass opacity is new . Elevation of the right minor fissure indicates volume loss . Linear opacities at both lung bases most likely reflects atelectasis . Rounded opacities at both lung bases are most compatible with nipple shadows . There is no pneumothorax . Bilateral pleural effusions , apparent on the subsequent CT , are no well seen on this exam . Moderate cardiomegaly is exaggerated by AP technique but may be bigger compared with the prior exam . Bilateral hilar lymphadenopathy is better seen on CT . Median sternotomy wires and valve prosthesis are intact .
    OUTPUT:
    
Known right upper lobe mass and post-obstructive pneumonia