Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided . Tracheostomy noted projecting over the superior mediastinum . The heart is mildly enlarged . Prominence of the mediastinum may reflect vascular engorgement . No convincing evidence for pneumonia . No large effusion or pneumothorax . Imaged osseous structures are intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
Congestion and mild pulmonary edema .