Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable frontal chest radiograph was performed . A endotracheal tube is 8 cm above the carina . A left pectoral pacemaker / AICD is present . There are bilateral perihilar ground glass opacities , consistent with moderate pulmonary edema . Retrocardiac opacity may be a small left pleural effusion . Fluid is seen within the minor fissure . There is no pneumothorax . The cardiac silhouette is mildly enlarged .
    OUTPUT:
    
1 . Endotracheal tube within the thoracic cavity , although could safely be advanced 2 cm for better positioning . 2 . Moderate pulmonary edema and a probable left pleural effusion .