Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are slightly low , similar to the prior exam , perhaps secondary to lack of inspiratory effort . No focal consolidation suggest pneumonia . No edema , pleural effusion , or pneumothorax . No change in the appearance of the cardiomediastinal silhouette and hila . Elevation of the right hemidiaphragm is unchanged .
    OUTPUT:
    
No acute intrathoracic process .