Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The endotracheal tube is 4 cm above the carina . An enteric tube courses along the esophagus and terminates likely within the stomach . Diffuse bilateral patchy opacities in appear largely unchanged from yesterday evening with further definition of the diaphragmatic and cardiac contours . There is no definite pleural effusion . The cardiac silhouette remains moderately enlarged . The mediastinal contours are unchanged .
    OUTPUT:
    
Unchanged severe bilateral air opacities with unchanged moderate cardiomegaly . While alveolar proteinosis is a consideration , given the patient 's underlying degree of peripheral fibrosis at baseline seen on outside studies , AIP should remain in the differential . Findings discussed with Dr . ___ by Dr . ___ at 11 :37 AM on ___ by telephone at the time of dictation .