Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Endotracheal tube tip terminates 3 cm from the carina . Orogastric tube tip is within the stomach . Heart size is normal . The aortic knob calcifications are demonstrated . The mediastinal contours are unremarkable . Fullness of both hila may suggest underlying pulmonary arterial enlargement . Lungs appear hyperinflated which could reflect underlying COPD . There appears to be mild cephalization of pulmonary vascular markings suggestive of pulmonary vascular congestion . Punctate radiopaque densities projecting over the right lung base may be due to prior aspiration of barium . The left costophrenic angle is excluded from the field of view . Streaky bibasilar opacities likely reflect atelectasis . No large pneumothorax or large pleural effusion is seen .
    OUTPUT:
    
1 . Limited study . Standard positions of the endotracheal and enteric tubes . 2 . Mild pulmonary vascular congestion . 3 . Evidence of prior aspiration of barium in the right lung base . 4 . Bibasilar atelectasis .