Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is top normal . The aorta is unfolded . Mediastinal and hilar contours are otherwise unremarkable . Pulmonary vasculature is normal . Lungs are clear without focal consolidation . No pleural effusion or pneumothorax is seen . Contour deformity involving the posterior aspect of the left hemidiaphragm on the lateral view could be due to the presence of an underlying focal diaphragmatic hernia or eventration . There is no acute osseous abnormality .
    OUTPUT:
    
No acute cardiopulmonary abnormality . Focal contour abnormality of the posterior aspect of the left hemidiaphragm possibly be suggestive of a small diaphragmatic hernia or eventration . This could be further assessed with chest CT on a nonurgent basis , and to exclude an underlying mass .