Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal lateral views of the chest . The lungs are clear without focal opacity , pleural effusion or pneumothorax . Bipical blebs again noted . The cardiac , mediastinal and hilar contours are normal . There is no free air beneath the hemidiaphragms . No displaced fracture is identified .
    OUTPUT:
    
No acute cardiopulmonary process .