Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Study is somewhat limited due to patient rotation . The heart size remains moderately enlarged . The mediastinal and hilar contours are grossly unchanged allowing for patient rotation . There appears to be mild pulmonary vascular congestion , slightly improved from prior . Patchy opacity in the left lung base could reflect atelectasis . No large pleural effusion or pneumothorax is seen although the left extreme costophrenic angle is excluded from the field of view .
    OUTPUT:
    
Limited exam . Mild pulmonary vascular congestion and left basilar atelectasis .