Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: 8 mm right middle lung nodule has to be investigated by CT scan . It is not clearly seen on the lateral view and could be a bone lesion . The remaining of the lungs is unremarkable . Mediastinal and cardiac contours are normal . There is no pleural effusion or pneumothorax . Patient has a moderate pectus excavatum .
    OUTPUT:
    
8 mm right middle lung nodule has to be investigated by a CT scan . It is unknown if it is a real lung lesion or a bone lesion . The results have been posted to the radiology dashboard for direct notification of the referring physician .