Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left chest wall single lead pacing device is seen with lead tip at the right ventricular apex . There is mild cardiomegaly and evidence of prior mitral valve repair . Left lateral pleural based scarring with adjacent parenchymal scarring is noted as well as volume loss in the left hemi thorax . The lungs are otherwise clear . Surgical clips project over the right chest wall .
    OUTPUT:
    
No acute cardiopulmonary process . Left chest wall single lead pacing device with lead tip at the right ventricular apex .