Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is moderate cardiomegaly with widening of the mediastinum , which is chronic and due to mediastinal lipomatosis , as seen on prior CT . There is no pneumothorax . Blunting of the posterior hemidiaphragm on the lateral view may indicate a small effusion , likely on the left . Lung volumes are slightly low , but there is no focal consolidation concerning for pneumonia . The upper abdomen is unremarkable . Chronic deformity of the right humeral head is noted .
    OUTPUT:
    
Low lung volumes with no focal consolidation concerning for pneumonia . Likely small left pleural effusion .