Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate severe cardiomegaly is stable . Central catheter is in standard position . Vascular congestion has improved . There is no pneumothorax . Left pleural effusion is small . Bibasilar atelectasis are larger on the left , improved from prior . There are mild degenerative changes in the thoracic spine . There are low lung volumes . Several healed left rib fractures are again noted
    OUTPUT:
    
Improved vascular congestion . No evidence of pneumonia