Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is intubated . The endotracheal tube terminates approximately 4 .5 cm above the carina . There is patchy opacification of the left lung base , probably including a small pleural effusion . Suspected parenchymal opacity is not specific and could be seen with atelectasis , pneumonia or aspiration . Elsewhere , the lungs appear clear . There is no pulmonary edema . No pneumothorax is demonstrated .
    OUTPUT:
    
Status post endotracheal intubation . Left basilar opacification .