Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The small right apical pneumothorax is unchanged compared with the study of ___ . The increased density of the left lung base is unchanged , likely with a small left pleural effusion . Areas of scarring in both mid lungs are unchanged . There is no pulmonary edema . The cardiomediastinal silhouette is within normal limits .
    OUTPUT:
    
Unchanged small right apical pneumothorax .