Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Upright frontal and lateral chest radiographs were performed . The mediastinal , pleural and pulmonary structures are unremarkable . The cardiac silhouette is of normal size . There is no pleural effusion or pneumothorax . Dextroscoliosis of the thoracic spine is unchanged from prior . There are no suspicious osseous lesions .
    OUTPUT:
    
No acute intrathoracic process .