Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to the previous examinations , there is stable opacification of the right upper lobe , consistent with aspiration versus pneumonia . The lung volumes are decreased , which leads to crowding of the bronchovascular structures . The remainder of the lungs are essentially clear without additional focal consolidation , pleural effusion , pneumothorax , or pulmonary edema identified . The cardiomediastinal silhouette is stable . An endotracheal tube is noted to be in place terminating 2 .8 cm above the level of the carina . A nasogastric tube is seen passing into the stomach .
    OUTPUT:
    
Stable opacification of the right upper lobe , likely secondary to aspiration versus pneumonia .