Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is known with head and neck cancer with bilateral pleural effusions that are longstanding , moderate on the right side and small on the left side with biapical stable minimal pneumothorax . Left - sided chest tube is in unchanged position projecting in mid left hemithorax . Bibasilar heterogeneous opacities are unchanged since ___ and could represent atelectasis however a superimposed infection or aspiration can not be excluded . Right - sided PICC line ends in lower SVC . Mediastinal and cardiac contours are normal .
    OUTPUT:
    
There is no significant change since prior exam . 1 . Bilateral longstanding pleural effusion are unchanged with minimal pneumothorax . 2 . Bibasilar opacities are unchanged since ___ and could represent atelectasis , however superimposed infection or aspiration can not be excluded .