Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . Low lung volumes result in bronchovascular crowding . There is no focal consolidation , pleural effusion or pneumothorax , although the posterior costophrenic sulci are excluded limiting evaluation for tiny effusions . Heart size is within normal limits . Mediastinal silhouette and hilar contours are normal allowing for low lung volumes . No acute osseous injury is identified . There is no free air under the diaphragm .
    OUTPUT:
    
Limited study . No acute intrathoracic process .