Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate somewhat suboptimal frontal evaluation due to obscuration of lung bases by the upper abdomen . Allowing for such , the lungs are clear , although low in volume . There is no pneumothorax , vascular congestion , or large effusion . Cardiomediastinal silhouette is within normal limits .
    OUTPUT:
    
No acute cardiopulmonary process such as pneumonia .