Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: On the lateral view only , there is a linear opacity projecting posteriorly at the base . This is new from the prior lateral radiograph . It does not have a definite correlate on the frontal radiograph , though may represent an early pneumonia . The rest of the lungs are clear . There is no pulmonary edema , pleural effusion , or pneumothorax . The cardiomediastinal silhouette is normal .
    OUTPUT:
    
Possible lower lobe pneumonia , seen only on the lateral view , as described above .