Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is intubated . The endotracheal tube terminates approximately 2 .5 cm above the carina . An orogastric tube courses into the stomach . The cardiac , mediastinal and hilar contours are unremarkable . There is substantial atelectasis of what appears to represent most of the right lower lobe although incomplete . There is no convincing indication for substantial right middle or upper lobe atelectasis . The left lung appears clear . There is no definite pleural effusion or pneumothorax .
    OUTPUT:
    
Status post endotracheal intubation . Substantial right lower lobe atelectasis . Short - term follow - up radiographs may be appropriate to reassess .