Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size remains moderate to severely enlarged , but unchanged compared to the prior exam . Aorta remains tortuous . The pulmonary vascularity is not engorged . Apart from subsegmental atelectasis in the lung bases , no focal consolidation , pleural effusion or pneumothorax is present . There are no acute osseous abnormalities .
    OUTPUT:
    
Cardiomegaly without congestive heart failure . Subsegmental atelectasis in the lung bases .