Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable supine frontal chest radiograph demonstrates endotracheal tube in appropriate position at the level of the clavicles 4 .1 cm above the level of the carina . An enteric feeding tube is seen coursing midline with tip in stomach and side ports below the level of the diaphragm . Hypoinflated lungs with bilateral perihilar interstitial opacities consistent with vascular crowding . Right lower lobe atelectasis noted . Left lower lobe and retrocardiac opacity present . Limited assessment of the left costophrenic angle . No large left pleural effusion . No right pleural effusion . No pneumothorax . Mild cardiomegaly , partially accentuated due to low lung volumes . Mediastinal contour and hila are otherwise unremarkable . Limited assessment of the osseous structures are unremarkable and upper abdomen is within normal limits .
    OUTPUT:
    
1 . Low lung volumes with bibasilar atelectasis . 2 . Left lower lobe and retrocardiac opacities most consistent with atelectasis however can not exclude superimposed pneumonia . Clinical correlation is recommended . 3 . Support lines and tubes as described above . Although no fracture or other bone abnormality is seen , conventional chest radiographs are not appropriate for detection or characterization of chest cage lesions . Any focal findings should be clearly marked and imaged with either bone detail views or CT scanning .