Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Elevation of the right hemidiaphragm is attributable to an enlarged polycystic liver , as seen on the previous CT . Heart size appears normal , slightly displaced to the left by the elevated right hemidiaphragm . Mediastinal and hilar contours are unremarkable . Pulmonary vasculature is normal . No focal consolidation , pleural effusion pneumothorax is present . No acute osseous abnormality is visualized .
    OUTPUT:
    
No acute cardiopulmonary abnormality . Elevation of the right hemidiaphragm is attributable to an enlarged polycystic liver as seen on previous CT .