Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Two frontal images of the chest were obtained . There are low lung volumes likely secondary to poor inspiration . The lungs are clear . There is no pneumothorax or pleural effusion . Cardiomediastinal silhouette is unremarkable .
    OUTPUT:
    
Essentially unchanged chest radiograph with no evidence of acute cardiac or pulmonary pathologies .