Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A frontal semi-upright view of the chest was obtained portably . There is no focal consolidation , pleural effusion , or pneumothorax . Heart size is normal . Mediastinal silhouette and hilar contours are normal . Fusion of anterior right ribs is likely congenital .
    OUTPUT:
    
No acute intrathoracic process .