Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The study is limited due to patient rotation to the right . Within this limitation , the lungs are clear without focal opacity , pulmonary edema , pleural effusion or pneumothorax . The cardiac and mediastinal contours are stable . There is no free air beneath the right hemidiaphragm .
    OUTPUT:
    
Limited exam without convincing evidence for pneumonia .