Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear . No focal consolidation , pleural effusion , pulmonary edema , or pneumothorax . The appearance of the cardiac silhouette is overall unchanged when accounting for differences in technique from the prior exam . The hila are unremarkable and similar to the prior exam .
    OUTPUT:
    
No acute intrathoracic process .