Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a focal nodular opacity projecting over the left lower lung . While this may represent superimposed shadows , as no definite correlate is seen on the lateral view , underlying pulmonary nodule is not excluded . The lungs are otherwise clear . The cardiac silhouette is top - normal . No acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary process . Focal nodular opacity projecting over the left lower lung , potentially superimposed shadows but dedicated shallow oblique images suggested to re-evaluate .