Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable view of the chest demonstrates low lung volumes , which accentuate bronchovascular markings . Moderate cardiomegaly is unchanged . There is mild pulmonary edema , slightly progressed since prior . No pleural effusion or pneumothorax is seen . Tracheostomy tube is in place .
    OUTPUT:
    
Moderate cardiomegaly and mild pulmonary edema , slightly progressed since prior .