Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs were obtained . Exam is limited by body habitus . Despite the limitations , the lungs are clear . No nodule , consolidation , or effusion is present . The heart and mediastinal contours are normal . There is no pneumoperitoneum .
    OUTPUT:
    
No acute cardiopulmonary process or free abdominal air .