Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A chest tube overlies the lower right lung . A relatively large pneumothorax is seen at the right lung base . There is increased opacity in the retracted right lung base and perihilar region . The right upper lung appears relatively clear . Probable mild rightward shift of the mediastinum . There is mild cardiomegaly without unfolded aorta . The left hilum is prominent , with a tapered appearance , which could reflect the presence of pulmonary hypertension . There is minimal atelectasis or scarring at the left lung base . There is mi prominence of the interstitial markings in the left lung . Abnormalities in the left lung , which include increased interstitial markings and multiple small nodular opacities , are more completely demonstrated on the outside CT scan .
    OUTPUT:
    
1 . Right chest tube in place . Relatively large pneumothorax at right lung base . Slight rightward shift of mediastinum noted 2 . Retracted / atelectatic right lung , with increased opacity in the right lung base and perihilar region . This appearance is more completely demonstrated on the recent outside CT scan . 3 . Prominence of the left pulmonary hilum raises question of pulmonary hypertension . 4 . Subtle increased interstitial markings and nodular densities in the left lung , more completely visualized on outside CT from ___ day earlier .