Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A right - sided PICC terminates in the mid to upper SVC as before . The heart is normal in size . The aorta is minimally tortuous . There is an opacity involving the right upper lobe and right middle lobe , which are not significantly increased . A left lower lobe opacity is minimally improved . There may be a small left pleural effusion .
    OUTPUT:
    
Opacities involving the right upper lobe and right middle lobe are not significantly increased . A left lower lobe opacity is improving from the prior study .