Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral views of the chest were obtained . Lungs are clear bilaterally without focal consolidation , nodules or pulmonary edema . ' S ' shaped thoracic scoliosis . The aorta is ectatic . The cardiac silhouette is likely slightly enlarged . No pleural effusion or pneumothorax . There is no free air beneath the right hemidiaphragm . No acute osseous abnormality .
    OUTPUT:
    
No acute intrathoracic process . Probable cardiomegaly with no signs of acute heart failure .