Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval placement of a left pectoral pacemaker with dual leads terminating in the right atrium and right ventricle . The course of the leads is unremarkable and there is no pneumothorax . The inspiratory lung volumes are appropriate . The hazy left basilar opacity corresponds to a large fat containing diaphragmatic hernia . There is no focal consolidation or pleural effusion . The pulmonary vasculature is not engorged . The cardiomediastinal and hilar contours are within normal limits . No acute osseous abnormality is detected .
    OUTPUT:
    
No pneumothorax . Unchanged left basilar opacification due to large fat - containing diaphragmatic hernia .