Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Upright AP and lateral radiographs of the chest demonstrate the lungs are well expanded , with no evidence of pneumothorax , pleural effusion , or pulmonary edema . Right apical pleural thickening and aortic knob calcifications are noted . A poorly localized opacity projecting over the lower thoracic spine on the lateral view may be due to summation artifact from overlying structures .
    OUTPUT:
    
No acute cardiopulmonary process .