Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided dual - chamber pacemaker device is noted with leads terminating in the right atrium and right ventricle . The heart remains moderately enlarged but unchanged . Large hiatal hernia is again demonstrated . Mediastinal and hilar contours are stable . Fat containing posterior diaphragmatic hernia on the right is unchanged . Patchy ill - defined opacity in the right lung base is new with with similar - appearing opacification in the left lung base . No pulmonary vascular congestion is demonstrated . A small right pleural effusion is likely present . There is no pneumothorax . Diffuse demineralization of the osseous structures is seen . Loss of height of a low thoracic vertebral body appears relatively unchanged . Worsening compression deformity of a mid thoracic vertebral body is noted compared to the previous radiograph .
    OUTPUT:
    
1 . Increased bibasilar airspace opacities which are nonspecific but could reflect infection . 2 . Large hiatal hernia and fat containing right posterior diaphragmatic hernia . 3 . Probable small right pleural effusion . 4 . Slight interval increase in extent of a compression deformity of a mid thoracic vertebral body .