Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Vague rounded opacity projecting over the left midlung is compatible with lipoma confirmed by prior CT scan . The lungs are otherwise clear . There is no effusion or pneumothorax . Cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities identified .
    OUTPUT:
    
No acute cardiopulmonary process .