Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . Low lung volumes result in bronchovascular crowding . There is no focal consolidation , pleural effusion , or pneumothorax . Heart size is upper limits of normal , unchanged from ___ . Mediastinal silhouette and hilar contours are normal . Mild biapical extrapleural thickening is unchanged from ___ . ___ over the neck are from prior thyroid surgery .
    OUTPUT:
    
No pneumonia , edema or effusion .