Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . No prior . Relatively low lung volumes are seen with secondary crowding of the bronchovascular markings . Mild blunting of posterior costophrenic angle on the right may represent trace effusion . Cardiomediastinal silhouette is within normal limits . Gastric band is identified within the upper abdomen . Osseous and soft tissue structures are otherwise unremarkable .
    OUTPUT:
    
No definite acute cardiopulmonary process given low lung volumes . Possible trace right pleural effusion .