Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Previously seen right - sided central venous catheter is no longer visualized . There is subtle nodular opacity projecting over the right posterior third rib not clearly seen on the previous exam . The lungs are otherwise clear . There is no effusion or pneumothorax . The cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities identified .
    OUTPUT:
    
Nodular opacity projecting at the right lung apex for which repeat views including apical lordotic view is suggested as this could be within the lung , overlying soft tissue structures or potentially external . Otherwise no acute cardiopulmonary process .