Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is top normal with mildly tortuous thoracic aortic arch . Hilar contours are unchanged . Again identified is a widespread ground - glass opacity involving most of the right upper lobe and right middle lobe and left lung base , similar compared to a CT examination from one day prior given difference in technique . Again appreciated is small right - sided pleural effusion . Again identified is a roughly 1 .6 cm left upper lobe nodule as seen on recent CT examination . The remainder of the left lung field is otherwise clear . There is no pneumothorax .
    OUTPUT:
    
1 . Similar appearance of widespread ground - glass opacities involving the right upper and middle lobe and left lung base which may represent infection or hemorrhage . Drug toxicity is possible although unilateral focal involvement makes this unlikely . 2 . Roughly 1 .6 cm left upper lobe lung nodule as on CT . 3 . Small right pleural effusion .