Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Small left apical pneumothorax is identified , measuring 1 .5 cm in depth . Small opacity at the left lung apex may reflect post procedural changes . Rest of the lungs are clear without consolidation . There is noted pleural effusion . Cardiomediastinal silhouette is normal size .
    OUTPUT:
    
Small left apical pneumothorax .