Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The size of the cardiac silhouette is enlarged but unchanged . There is a small right pleural effusion with subjacent atelectasis . No pneumothorax identified . No abnormal calcifications within the lungs or mediastinum . Degenerative changes of the thoracic spine are visualized .
    OUTPUT:
    
No radiographic evidence of intrathoracic tuberculosis .