Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP single view of the chest has been obtained with patient in sitting upright position . Available for comparison are the next two preceding portable chest examinations of ___ and ___ . In comparison with the next preceding study , the patient has now been extubated . No pneumothorax has developed . Again noted is a rather sizable parenchymal infiltrate in the left lower lung field similar to what has been shown on previous examinations as well as an initial chest CT of ___ . These densities are compatible with aspiration pneumonitis given patient 's history . There is probably some mild cardiac enlargement , but the portable examination and the uncooperative patient added to makes it difficult to establish clear findings . There is no congestive pulmonary vascular pattern in the accessible areas . Lateral pleural sinuses are free , which excludes larger pleural effusions . As on previous examination , there is evidence of an anterior cephalization plate overlying the lower cervical spine area .
    OUTPUT:
    
Persistent sizable parenchymal infiltrate in left lower lobe area . No new abnormalities in this portable chest examination .