Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal silhouette and pulmonary vasculature are unchanged since the prior examination . There is a moderate , new right - sided pneumothorax . There is no mediastinal shift . Calcifications of the aortic knob are noted . Fiducial marker is noted in the upper right lung which is also associated with a rounded opacity compatible with patient 's known mass lesion . Again noted are peripherally calcified breast implants .
    OUTPUT:
    
Moderate right pneumothorax .