Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes bilaterally . Bibasilar opacities which may represent pulmonary edema are improved . No evidence of pneumonia . No pleural effusion or pneumothorax is seen . Apparent cardiomegaly may be an artifact of narrow AP chest diameter with abundant mediastinal fat . Stable mediastinal widening due to vascular engorgement . Left chest port with tip in the right atrium . Bilateral pleural fat again demonstrated , better seen on previous CT .
    OUTPUT:
    
Bibasilar opacities are improved . No current evidence of pneumonia . Low lung volumes bilaterally . Stable mediastinal widening due to vascular engorgement .