Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Sternotomy wires are intact . ET tube is 5 cm above the level of the carina in appropriate position . NG tube enters into the stomach and out of view . Swan - Ganz catheter tip is at outflow tract . Pacemaker - like device projects over left pectoral region with lead tip in the right ventricle . Elevated left hemidiaphragm is as seen on CT with mild left lower lobe atelectasis . No pneumothorax , pulmonary edema , focal opacity or pleural effusion . Heart size is normal with normal mediastinal contour and hila . No bony abnormality .
    OUTPUT:
    
Mild left lower lobe atelectasis with elevated left hemidiaphragm as seen on ___ CT . No pneumothorax .