Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is decreased opacification at the right upper lobe from ___ with persistent coarse reticular opacities in the right upper and middle lobes , which may represent lymphangitic spread of tumor versus resolving post-obstructive pneumonia . There is no significant pleural effusion or pneumothorax . The left cardiomediastinal and hilar contours are within normal limits . A left Port - A - Cath is unchanged with the tip terminating at the cavoatrial junction . The trachea is midline .
    OUTPUT:
    
1 . Improved right upper lobe opacification from ___ . 2 . Persistent coarse reticular opacities in the right upper and middle lobes may represent resolving post-obstructive pneumonia although tumor infiltrate is not excluded .