Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild cardiomegaly is stable . Nodular opacity projecting over the anterior fifth left rib warrants further evaluation with shallow oblique views , otherwise the lungs are clear . There is no pneumothorax or pleural effusion . The osseous structures are unremarkable
    OUTPUT:
    
No acute cardiopulmonary abnormalities Left the nodular opacity , shallow oblique views are recommended