Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: ICD in left pectoral region with lead tip in right ventricular apex and is unchanged . Stable small left pleural effusion with clear lungs bilaterally . No pneumothorax . Heart size , mediastinal contour , and hila are normal . No bony abnormality .
    OUTPUT:
    
Stable small left pleural effusion .