Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A frontal upright view of the chest was obtained portably . Low lung volumes result in bronchovascular crowding . There is no focal consolidation , pleural effusion or pneumothorax . Heart size with mild cardiomegaly is unchanged . Mediastinal silhouette and hilar contours are unchanged allowing for differences in technique and patient position .
    OUTPUT:
    
No pneumonia , edema or effusion .