Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Assessment is slightly limited by patient rotation . Tracheostomy tube remains in unchanged position as does a left - sided PICC . Heart size remains mildly enlarged . The aorta is diffusely calcified . Mediastinal and hilar contours are grossly unchanged . Linear scarring versus atelectasis is noted in the left mid lung . Opacification within the retrocardiac region may reflect an area of atelectasis though infection can not be excluded . Abnormal curvilinear lucency at the left lung base may reflect a small pneumothorax . Small bilateral pleural effusions appear relatively unchanged . Streaky atelectasis in the right lung base is present .
    OUTPUT:
    
Limited study . Abnormal curvilinear lucency at the left lung base concerning for a small pneumothorax . Small bilateral pleural effusions with retrocardiac opacity , potentially atelectasis though infection can not be excluded .