Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the prior study , the chest tube is been removed . A small right apical pneumothorax is visible . In retrospect , this is probably unchanged . A bleb like lucency is also now visible along the edge of the elevated right hemidiaphragm , of uncertain significance . This does not clearly represent a a portion of the pneumothorax . Extensive subcutaneous emphysema along the right neck and right chest and abdominal wall is again noted , relatively similar . Elevation of the right hemidiaphragm is similar to the prior study . The cardiomediastinal silhouette including the right paratracheal / pericarinal opacity is unchanged . Vascular plethora in both upper zones is similar to the prior study . There has been slight interval increase in patchy opacity immediately above the right hemidiaphragm slightly . Atelectasis at the left base and minimal blunting of left costophrenic angle is similar to the prior study .
    OUTPUT:
    
1 . Small right apical pneumothorax . In retrospect , this is probably unchanged . 2 . Small bleb like lucency at the right lung base is of uncertain etiology , not clearly part of the pneumothorax . Attention to this area on followup films is requested . 3 . Slight interval increase in patchy opacity at the right lung base , question atelectasis .