Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are poorly expanded , accounting for some vascular crowding . No focal opacities are present . Posterior mediastinal widening is not acute and likely due to a tortuous dilated thoracic aorta . Stable mild cardiomegaly . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No evidence of acute cardiopulmonary process . Of note , chest radiographs are not tailored for the assessment of bony structures . If clinical concern for osseous trauma is high , dedicated detailed views are recommended .