Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left apical lateral pneumothorax measuring up to 3 .4 cm in largest dimension . No appreciable right pneumothorax is noted . Atelectasis of the left lung base with elevation of the left hemidiaphragm . Re-expansion of the left upper lobe ___ chest radiograph . Bronchial valves project over the left mid lung . The heart is normal in size . Mediastinum is not widened . No evidence of tension .
    OUTPUT:
    
1 . Moderate left pneumothorax without evidence of tension . 2 . Left bronchial valves - if assessment of location is desired , CT is needed .