Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Upright AP and lateral radiographs of the chest were obtained . There is top normal heart size . Mild platelike right lower lung atelectasis is noted . Otherwise , lungs are clear . There is no pneumothorax or pleural effusion . Pulmonary vascularity is normal .
    OUTPUT:
    
No acute cardiopulmonary process .