Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Opacification of the left hemithorax is similar , with unchanged mild rightward mediastinal shift . Air bronchograms are discernable within the region of the left pulmonary hilus . There is no pneumothorax . A left pleural pigtail catheter is unchanged in position in the left lung base . Right basilar atelectasis and pleural effusion are similar - appearing . A right IJ central venous catheter tip terminates near the cavoatrial junction .
    OUTPUT:
    
Rapid progression of left - sided opacity following pigtail placement is concerning for hemorrhagic fluid accumulation , and is not well explained by reexpansion pulmonary edema given the appearance of mass effect . A repeat CT may reveal the etiology of fluid accumulation . These findings were discussed with Dr . ___ at 2 :50 p .m . by phone .