Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Bibasilar atelectasis is similar to prior . There is no focal consolidation , effusion , or pneumothorax . Cardiomegaly is similar to prior . The mediastinal silhouette is normal . Imaged osseous structures are intact . No free air below the right hemidiaphragm is seen . Right lower lobe pulmonary nodule is similar to prior .
    OUTPUT:
    
No acute intrathoracic process . Right lower lobe pulmonary nodule is similar to prior .