Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided pacer device is stable in position with lead extending to the expected locations of the right ventricle coronary sinus . The cardiac silhouette remains markedly enlarged . There is persistent obscuration of the left hemidiaphragm which may in part relate to overlying soft tissue ; however , on the lateral view , there is focal opacity projecting over the posterior lung base which could be due to focal consolidation or less likely pleural effusion .
    OUTPUT:
    
Opacity projecting over the posterior lung base on the lateral view , not well seen on the frontal view , but could be due to consolidation from infection or aspiration , less likely pleural effusion . Persistent enlargement of the cardiac silhouette .