Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . Cardiomediastinal silhouette is unchanged with mild cardiomegaly again noted . Lung volumes are low . There is no focal consolidation , large effusion or pneumothorax . Mild congestion noted without frank edema . Bony structures remain intact .
    OUTPUT:
    
Cardiomegaly unchanged with mild hilar engorgement again noted . No frank pulmonary edema .