Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is top - normal . The mediastinal and hilar contours are similar . There is mild pulmonary vascular congestion without frank pulmonary edema . A small right pleural effusion is decreased in size compared to the previous study . Patchy opacity within the right lower lobe may reflect atelectasis , but infection is not excluded in the correct clinical setting . No additional focal consolidation , left - sided pleural effusion , or pneumothorax is detected . There are no acute osseous abnormalities .
    OUTPUT:
    
Mild pulmonary vascular congestion with small right pleural effusion , decreased in size compared to the prior exam , and associated right basilar atelectasis . Please note that infection in the right lung base can not be excluded in the correct clinical setting .