Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single semi-upright AP view of the chest was obtained . Minimal vascular congestion . Slight prominence of the right pulmonary hilum is relatively unchanged since ___ and is likley due to vascular engorgement . The right costophrenic angle is clear ; however , obscuration of the left costophrenic angle is likely due to overlying soft tissue . Underlying trace effusion is difficult to exclude . Cardiomediastinal silhouette is enlarged . No pneumothorax . No free air below the diaphragm .
    OUTPUT:
    
Minimal vascular congestion . Slight prominence of the right hilum is similar to the prior study and may be due to vascular engorgement . Evaluation of the left costophrenic angle is limited due to overlying soft tissue . Underlying trace pleural effusion is difficult to exclude . Cardiomegaly .