Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is no focal consolidation , pleural effusion , or pneumothorax . Since the prior study , the heart size has enlarged . Mediastinal silhouette is unremarkable . There are no acute skeletal abnormalities .
    OUTPUT:
    
Increased cardiomegaly since the prior study of ___ . Otherwise , no acute intrathoracic process .