Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Endotracheal tube tip terminates approximately 5 cm from the carina . Nasogastric tube tip is below the gastroesophageal junction , though the side port is within the distal esophagus . Lung volumes are low . Heart size is accentuated due to low lung volumes and is borderline enlarged . Mediastinal contours are prominent due to supine positioning and low lung volumes . There is crowding of the bronchovascular structures but no overt pulmonary edema is noted . Retrocardiac opacity may reflect atelectasis or aspiration . There is no pleural effusion or pneumothorax . No acute osseous abnormalities detected .
    OUTPUT:
    
1 . Standard position of the endotracheal tube . 2 . Side port of the nasogastric tube lies above the gastroesophageal junction and should be advanced approximately 7 cm for optimal positioning . 3 . Retrocardiac opacity may reflect atelectasis , although aspiration is not excluded .