Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs demonstrate blunting of the right costophrenic sulcus of undetermined age . A small pleural effusion can not be excluded . There is no focal consolidation or pneumothorax . The heart size is normal . The cardiac , hilar , and mediastinal contours are within normal limits .
    OUTPUT:
    
No acute cardiopulmonary process .