Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest show clear lungs without focal consolidation , pleural effusion , or pneumothorax . The pulmonary vasculature is not engorged . The mediastinal and hilar contours are within normal limits . The cardiac silhouette is normal in size . The aortic knob is partially calcified , with tortuosity of the descending thoracic aorta . A right humeral head prosthesis is partially imaged and unchanged from the preceding radiograph . Irregularity at the left glenohumeral joint is incompletely assessed on these images , but unchanged from CT of ___ . The patient is status post coronary artery stenting which is visualized overlying the heart on frontal and lateral radiographs .
    OUTPUT:
    
No acute cardiopulmonary process .