Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low leading to crowding of the bronchovascular structures . The right hemidiaphragm remains elevated . Moderate cardiomegaly and mild central vascular congestion are essentially unchanged . Possible small right pleural effusion . There is no lobar consolidation , left pleural effusion , or pneumothorax identified .
    OUTPUT:
    
Low lung volumes and moderate cardiomegaly , minimally changed from the prior examination . If ongoing clinical concern , can repeat with better inspiration .