Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single AP upright portable view of the chest was obtained . There are low lung volumes . Slight blunting of the left costophrenic angle could be due to pleural effusion . No definite focal consolidation is seen . There is mild central pulmonary vascular engorgement . The cardiac silhouette is top normal . The mediastinal contours are unremarkable .
    OUTPUT:
    
Low lung volumes . Slight blunting of the left costophrenic angle could be due to overlying soft tissue or trace pleural effusion . Mild central pulmonary vascular engorgement ; prominence of the vasculature may be accentuated by low lung volumes .