Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal semi upright views of the chest were obtained portably . The lungs are clear without focal consolidation , pleural effusion or pneumothorax . Heart size is normal . Mediastinal silhouette and hilar contours are normal . The nondisplaced right anterior rib fractures and peripheral right lower lobe opacity seen on the prior CT are not visualized on this study .
    OUTPUT:
    
No radiographic evidence of intrathoracic injury . Right rib fracture and RLL pulmonary contusion better seen on prior CT .