Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal contours are normal . Lungs are clear except for minimal crowding of bronchovascular structures at the lung bases related to slightly low lung volumes . No evidence of pleural effusion or pneumothorax . Distended bowel in the upper abdomen is a nonspecific finding that is likely been more fully assessed by recent abdominal and pelvic CT from earlier the same date .
    OUTPUT:
    
No acute cardiopulmonary radiographic abnormality .