Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral images of the chest . There is slightly low lung volumes , but the lungs are clear . There is no pleural effusion or pneumothorax . The cardiomediastinal silhouette is unremarkable . A device likely representing a gastric stimulator is seen overlying the area of the stomach .
    OUTPUT:
    
No acute cardiopulmonary process .