Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Right chest wall pacer device again seen with leads extending to the region the right atrium and right ventricle . Lung volumes are somewhat low . Cardiomegaly is again noted with a LV configuration . There is no evidence of congestion or edema . A linear left mid lung density may represent a focus of platelike atelectasis . No large effusion or pneumothorax . Mediastinal contour is stable . Bony structures are intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
Cardiomegaly , otherwise unremarkable .