Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Known left upper lobe mass is seen with a centrally placed fiducial marker per endoscopy . Bilateral atelectatic changes are again seen . Cardiomediastinal silhouette and hila are normal . Mild edema and small effusion remains . There is no pneumothorax and no large pleural effusion .
    OUTPUT:
    
Fiducial marker in the left upper lobe mass . No pneumothorax . Small right effusion and mild edema .