Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-upright radiograph of the chest demonstrates interval decrease in size of the still large right - sided pleural effusion with persistent collapse of the right lower lobe and persistent shift of the mediastinum to the right . Again seen are stable - appearing diffuse interstitial opacities consistent with mild pulmonary edema or lymphangitic spread of cancer . There is a stable - appearing small left - sided pleural effusion . Multiple nodules are seen in the left lung field . A right VP shunt catheter is seen coursing along the right chest and into the right upper quadrant of the abdomen . A right - sided pigtail catheter projects over the right hemithorax . There is a tiny right - sided apical pneumothorax .
    OUTPUT:
    
Tiny right - sided apical pneumothorax .