Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A tracheostomy remains in unchanged position . A left PICC line has been removed since ___ . There is interval improvement in left lower lobe opacity and improvement in pulmonary vascular congestion , now mild . Moderate enlargement of the cardiomediastinal silhouette is slightly improved compared to prior . No pleural effusion or pneumothorax is present .
    OUTPUT:
    
Improvement in left lower lobe opacity with improvement in pulmonary vascular congestion since ___ . Slight improvement in moderate cardiomediastinal enlargement .