Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest views were obtained with patient in upright position . Analysis is performed in direct comparison with the next preceding PA and lateral chest examination of ___ . Whereas the described changes in the right hemithorax are stable , the left - sided basal pleural density has decreased markedly and the left - sided diaphragmatic contour is now identified both on frontal and lateral view . No evidence of pneumothorax in the apical areas on either side .
    OUTPUT:
    
Successful thoracocentesis removing major portion of left - sided pleural effusion . No pneumothorax following thoracocentesis .