Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Focal left upper lobe pulmonary nodule / ground ground - glass opacity with fiducial marker is similar in appearance compared to the prior study . The appearance of the lungs is stable . No large pleural effusion or pneumothorax is seen . Cardiac and mediastinal silhouettes are stable , as are the hilar contours .
    OUTPUT:
    
No significant interval change .