Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post sternotomy , with mild cardiomegaly , without significant change . There is mild upper zone redistribution and very slight vascular plethora , not significantly changed compared with ___ . As before , the right hemidiaphragm is elevated left hemidiaphragm is lateralized , with patchy atelectasis in the right cardiophrenic region ( slightly increased ) and minimal blunting of left costophrenic angle . No new or increased pleural effusion is detected . Again seen is a right - sided PICC line with tip overlying SVC / RA junction .
    OUTPUT:
    
Mild upper zone redistribution and very slight vascular plethora , without overt CHF , probably unchanged . New patchy atelectasis in the right cardiophrenic region . No gross effusion . Minimal blunting of left costophrenic angle is unchanged and could represent chronic pleural thickening / scarring .