Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The mediastinal and hilar contours are normal . The pulmonary vasculature is normal . Lungs are clear . The right costophrenic angle is not imaged . No left - sided pleural effusion is present . There is no pneumothorax . There are no acute osseous abnormalities . Left shoulder arthroplasty is not completely assessed .
    OUTPUT:
    
No acute cardiopulmonary abnormality .