Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is enlarged . There is redemonstration of bilateral reticulonodular parenchymal opacities throughout the lungs that have progressed when compared to the prior exam . Nodular opacities at the apices , right upper lobe , and the left upper lobe have progressed when compared to the prior exam . There is no evidence of pneumothorax or pleural effusions . There is tortuosity of thoracic aorta . There is no evidence of pneumoperitoneum and osseous structures are unchanged .
    OUTPUT:
    
Progression of reticulonodular opacities within the lungs bilaterally as compared with recent CT Chest . The differential on prior CT included acute interstital pneumonitis , viral infection , and drug reaction . However , superimposed infection can not be entirely excluded .