Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs demonstrate no focal consolidation , pleural effusion or pneumothorax . There is a nodular opacity projecting adjacent to the right interlobar artery which was also faintly seen on the prior study and likely represents overlap of vascular structures . Aortic tortuosity is unchanged . The heart size is stable .
    OUTPUT:
    
No acute cardiopulmonary process .