Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are clear bilaterally with no pleural effusion , masses , lesions , or pneumothorax . There is a defect in the lower left ribs secondary to splenectomy with post operative changes seen in the left hemidiaphragm . Mediastinal silhouette is within normal limits and stable . Pleural surfaces are unremarkable .
    OUTPUT:
    
No evidence of malignancy or infection .