Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate to severe enlargement of the cardiac silhouette is unchanged . Widening of the superior mediastinal contour is compatible with underlying lymphadenopathy , unchanged , and better seen on the previous CT . Hilar contours are similar and there is mild pulmonary edema , as seen previously . Small right pleural effusion is likely present . Patchy right basilar opacity could reflect atelectasis . No pneumothorax is seen . Tracheostomy tube is in unchanged position . There are no acute osseous abnormalities .
    OUTPUT:
    
Unchanged moderate to severe cardiomegaly with mild pulmonary edema and probable small right pleural effusion . Patchy right basilar opacity may reflect atelectasis . Tracheostomy appears unchanged .